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Recent questions tagged trigonometric-functions
ASK
$2\sin ^2\large\frac{3\pi}{4}$$+2\cos^2\large\frac{\pi}{4}$$+2\sec^2\large\frac{\pi}{3}$ =
cl38429
sat
trigonometry
cbse
math
class11
ch3
trigonometric-functions
bookproblem
exercise3-3
q4
sec-b
medium
asked
Jul 3
by
pady_1
1
answer
If Acos^2 theta + Bsin^2 theta = C, show that tan^2 theta = C - A/B-C^ me
math
trigonometric-functions
trigonometry-and-its-applications
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Feb 18
by
abdulrasaqlekan
1
answer
how to crack out maths trigonometric function??
cbse
class11
trigonometric-functions
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Aug 29, 2014
by
aishwaryalakshmi44
1
answer
Solve the equation $\sec^22x=1-\tan 2x$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
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May 22, 2014
by
sreemathi.v
1
answer
Solve the equation $\sin 9\theta=\sin \theta$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
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May 22, 2014
by
sreemathi.v
1
answer
Solve the equation $\sin mx+\sin nx=0$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
Solve the equation $\sin x\tan x-1=\tan x-\sin x$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
If $(1+\tan A)(1+\tan B)=2$ find all values of $A+B$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
If $\tan(\cot x)=\cot(\tan x)$,prove that $\sin 2x=\large\frac{4}{(2n+1)\pi}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 22, 2014
by
sreemathi.v
1
answer
Solve $3\tan(\theta-15^{\large\circ})=\tan(\theta+15^{\large\circ})$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 22, 2014
by
sreemathi.v
1
answer
Solve the equation :$\tan 2x=-\cot (x+\large\frac{\pi}{6})$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
Solve the equation $\tan\theta+\tan(\theta+\large\frac{\pi}{3})$$+\tan(\theta+\large\frac{2\pi}{3})=$$3$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
If $\cos\theta=\large\frac{\cos\alpha-\cos\beta}{1-\cos\alpha\cos\beta}$ then prove that one of the values of $\tan\large\frac{\theta}{2}$ is $\tan \large\frac{\alpha}{2}$$\cot \large\frac{\beta}{2}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 22, 2014
by
sreemathi.v
2
answers
If $\cos \theta=\cos \alpha.\cos\beta$ prove that $\tan\large\frac{\theta+\alpha}{2}$$\tan\large\frac{\theta-\alpha}{2}=$$\tan^2\large\frac{\beta}{2}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 22, 2014
by
sreemathi.v
1
answer
Prove that $(\cos A+\cos B)^2+(\sin A+\sin B)^2=4\cos^2\large\frac{A-B}{2}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
Prove that $\large\frac{1+\sin \theta-\cos \theta}{1+\sin \theta+\cos \theta}=$$\tan\large\frac{\theta}{2}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
Evaluate : $\sin 18^{\large\circ}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
If $\sin x+\sin y=a$ and $\cos x+\cos y=b$,show that $\sin(x+y)=\large\frac{2ab}{a^2+b^2}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 22, 2014
by
sreemathi.v
1
answer
If $2\tan\alpha=3\tan\beta$,prove that $\tan(\alpha-\beta)=\large\frac{\sin 2\beta}{5-\cos^2\beta}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 22, 2014
by
sreemathi.v
1
answer
Prove that $\tan\alpha\tan(60^{\large\circ}-\alpha)\tan (60^{\large\circ}+\alpha)=\tan 3\alpha$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\cos^3A\cos 3A+\sin^3A\sin 3A=\cos^32A$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\tan\alpha+2\tan 2\alpha+4\tan 4\alpha+8\cot 8\alpha=\cot\alpha$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\tan(\large\frac{\pi}{4}$$+\theta)+\tan(\large\frac{\pi}{4}-$$\theta)=2\sec 2\theta$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\tan(60^{\large\circ}+A)\tan(60^{\large\circ}-A)=\large\frac{2\cos 2A+1}{2\cos 2A-1}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\sin 20^{\large\circ}\sin 40^{\large\circ}\sin 80^{\large\circ}=\large\frac{\sqrt 3}{8}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
Express the following as the sum difference of cosines and sines $2\cos 7\theta.\cos 3\theta$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-a
easy
asked
May 21, 2014
by
sreemathi.v
1
answer
Express the following as the sum difference of cosines and sines $2\sin 3\theta.\cos\theta$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-a
easy
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that the value of $5\cos \theta+3\cos (\theta+\large\frac{\pi}{3})+$$3$ lies between -4 and 10
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Find the maximum and minimum values of the following expression $3\cos\theta+5\sin (\theta-\large\frac{\pi}{6})$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
Find the sign of the expression $\sin \theta+\cos \theta$ when $\theta=100^{\large\circ}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
If $3\tan \theta\tan\phi=1$ ,prove that $2\cos (\theta+\phi)=\cos (\theta-\phi)$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
If $\alpha$ and $\beta$ are the solution of the equation $a\sec\theta+b\tan\theta=c$,then show that $\tan(\alpha+\beta)=\large\frac{2bc}{b^2-c^2}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\cos^2A+\cos ^2B-2\cos A\cos B.\cos(A+B)=\sin^2(A+B)$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\tan 70^{\large\circ}=2\tan 50^{\large\circ}+\tan 20^{\large\circ}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Prove that $\cos (45^{\large\circ}-A).\cos(45^{\large\circ}-B)-\sin(45^{\large\circ}-A)\sin(45^{\large\circ}-B)=\sin(A+B)$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
If $A$ and $B$ are positive acute angle and $\cos A=\large\frac{1}{7},$$\cos B=\large\frac{13}{14}$,then show that $A-B=60^{\large\circ}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
Evaluate :$\sin(n\pi+(-1)^n\large\frac{\pi}{4})$ where $n$ is an integer,
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 21, 2014
by
sreemathi.v
1
answer
Evaluate $\tan 75^{\large\circ}+\cot 75^{\large\circ}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
Find the value of $\tan 105^{\large\circ}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
Evaluate $\sin 105^{\large\circ}+\cos 105^{\large\circ}$
sat
math
trigonometry
cbse
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
Find the value $\tan 330^{\large\circ}$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-a
easy
asked
May 21, 2014
by
sreemathi.v
1
answer
Find the value of $cosec(-1410^{\large\circ})$
sat
trigonometry
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-a
easy
asked
May 21, 2014
by
sreemathi.v
1
answer
Find the degree measure of $(-2)^c$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
If the arcs of the same length in two circles subtend angles of $60^{\large\circ}$ and $75^{\large\circ}$ at their respective centres,find the ratio of their radii
sat
trigonometry
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 21, 2014
by
sreemathi.v
1
answer
In right-angled triangle,the difference between the two acute angles is $(\large\frac{\pi}{15})^c$.Find the angles in degrees
sat
trigonometry
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 20, 2014
by
sreemathi.v
1
answer
Evaluate : $\cot ^4\theta+\cot ^2\theta$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 20, 2014
by
sreemathi.v
1
answer
Find the radian measure of $-37^{\large\circ}30'$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 20, 2014
by
sreemathi.v
1
answer
Find the degree measure of $(\large\frac{7\pi}{12})^c$
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-a
easy
asked
May 20, 2014
by
sreemathi.v
1
answer
The angles of a triangle are in the ratio 3 : 4 : 5.Find the smallest angle in degrees and the greatest angle in radians
sat
trigonometry
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-b
medium
asked
May 20, 2014
by
sreemathi.v
1
answer
In a circle of diameter 50cm,the length of a chord is 25cm.Find the length of the minor arc of the chord
cbse
math
class11
ch3
trigonometric-functions
additionalproblem
sec-c
difficult
asked
May 20, 2014
by
sreemathi.v
1
answer
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