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Recent questions tagged angles
Questions
Let $ABCD$ be a quadrilateral with area 18 with side AB parallel to the side CD and AB=2CD.Let AD be $\perp$ to AB and CD.If a circle is drawn inside the quadrilateral ABCD touching all the sides then its radius is
jeemain
math
class11
ch3
trigonometric-functions
q33
angles
difficult
asked
Nov 19, 2013
by
sreemathi.v
1
answer
The radius of the circle passing through the centre of the inscribed circle of the $\Delta$le ABC and through the end point of the base BC is R then $\large\frac{a}{R}$$\sec \large\frac{A}{2}$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q32
angles
difficult
asked
Nov 18, 2013
by
sreemathi.v
1
answer
$ABC$ is a $\Delta$le.Its area is 12sqcm and base is 6cm.The difference of base angle is $60^{\large\circ}$.If $A$ be the angle opposite to the base,then the value of $8\sin A-6\cos A$ is
jeemain
math
class11
ch3
trigonometric-functions
q31
angles
difficult
asked
Nov 18, 2013
by
sreemathi.v
1
answer
Let $ABC$ be a triangle such that $\angle ACB=\large\frac{\pi}{6}$.Let $a,b$ and $c$ denote the lengths of the sides opposite to $A,B$ and $C$ respectively.The value of $x$ for which $a=x^2+x+1,b=x^2-1$ and $c=2x+1$ is
jeemain
math
class11
ch3
trigonometric-functions
q26
angles
difficult
asked
Nov 18, 2013
by
sreemathi.v
1
answer
$ABC$ is a triangle with $\angle A=30^{\large\circ}$ $BC=10$cm.The area of the circumcircle of the $\Delta$le is?
jeemain
math
class11
ch3
trigonometric-functions
q57
angles
medium
asked
Nov 18, 2013
by
sreemathi.v
1
answer
The circumradius of the $\Delta$le whose sides are $13,12\; and\; 5 \;is$?
jeemain
math
class11
ch3
trigonometric-functions
q56
angles
medium
asked
Nov 18, 2013
by
sreemathi.v
1
answer
In a $\Delta ABC$ if $b=2,B=30^{\large\circ}$ then the area of the circumcircle of $\Delta$ ABC in square unit is
jeemain
math
class11
ch3
trigonometric-function
q98
angles
easy
asked
Nov 15, 2013
by
sreemathi.v
1
answer
In a $\Delta$ABC if the sides are $a=3,b=5,c=4$ then $\sin\large\frac{B}{2}$$+\cos{\large\frac{B}{2}}$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q97
angles
easy
asked
Nov 15, 2013
by
sreemathi.v
1
answer
The sides of a $\Delta$le are respectively 7cm,$4\sqrt 3$cm and $\sqrt{13}$cm then the smallest angle of the triangle is
jeemain
math
class11
ch3
trigonometric-functions
q96
angles
easy
asked
Nov 15, 2013
by
sreemathi.v
1
answer
If in any $\Delta ABC$ $A=30^{\large \circ}$ and $B=60^{\large\circ}$ then find $a: b:c$
jeemain
math
class11
ch3
trigonometric-functions
q91
angles
easy
asked
Nov 15, 2013
by
sreemathi.v
1
answer
The radii $r_1,r_2,r_3$ of described circle of a $\Delta$le ABC are in harmonic progression.If its area is 24sq .cm,and its perimeter is 24,find the lengths of its sides
jeemain
math
class11
ch3
trigonometric-functions
q23
angles
difficult
asked
Oct 21, 2013
by
sreemathi.v
1
answer
The greater of the angles $A=2\tan^{-1}(2\sqrt 2-1),B=3\sin^{-1}\big(\large\frac{1}{3}\big)$$+\sin^{-1}(\large\frac{3}{5})$ is
jeemain
math
class11
ch3
trigonometric-functions
q22
angles
difficult
asked
Oct 21, 2013
by
sreemathi.v
1
answer
The sides of a $\Delta$le are three consecutive natural numbers and its largest angle is twice the smallest one.Determine the sides of the triangle
jeemain
math
class11
ch3
trigonometric-functions
q20
angles
difficult
asked
Oct 21, 2013
by
sreemathi.v
1
answer
The angles $A,B$ and $C$ of a triangle ABC are in arithmetic progression.If $2b^2=3C^2$ determine the angle A
jeemain
math
class11
ch3
trigonometric-functions
q19
angles
difficult
asked
Oct 21, 2013
by
sreemathi.v
1
answer
The smallest positive value of $x$ (in degrees) for which $\tan ( x+100 ^{\circ}$$)=\tan (x+50^{\circ}) \times \tan x \times \tan (x-50^{\circ})$
jeemain
math
class11
ch3
trigonometric-functions
q12
angles
difficult
asked
Oct 18, 2013
by
sreemathi.v
1
answer
In a $\Delta PQR$ if $3\sin P+4\cos Q=6.4\sin Q+3\cos P=1$ then the angle $R$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q6
angles
difficult
asked
Oct 17, 2013
by
sreemathi.v
1
answer
Given both $\theta$ and $\phi$ are acute angles and $\sin\theta=\large\frac{1}{2},$$\cos\phi=\large\frac{1}{3}$ then the value of $\theta+\phi$ belongs to
jeemain
math
class11
ch3
trigonometric-functions
q2
angles
difficult
asked
Oct 17, 2013
by
sreemathi.v
1
answer
In a circle of diameter 50cm,the length of a chord is 25cm.Find the length of the minor arc of the chord.
jeemain
math
class11
ch3
trigonometric-functions
q49
angles
medium
asked
Oct 17, 2013
by
sreemathi.v
1
answer
If $p=\cos 55^{\large\circ},q=\cos 65^{\large\circ}$ and $r=\cos 175^{\large\circ}$ then the value of $\large\frac{1}{p}+\frac{1}{q}+\frac{r}{pq}$ is
jeemain
math
class11
ch3
trigonometric-functions
q46
angles
medium
asked
Oct 17, 2013
by
sreemathi.v
1
answer
Find $\tan 75^{\large\circ}+\cot 75^{\large\circ}$
jeemain
math
class11
ch3
trigonometric-functions
q28
angles
medium
asked
Oct 15, 2013
by
sreemathi.v
1
answer
Find the value of $\sin 67\large\frac{1}{2}^{\large\circ}$ & $\cos 67\large\frac{1}{2}^{\large\circ}$
jeemain
math
class11
ch3
trigonometric-functions
q14
angles
medium
asked
Oct 14, 2013
by
sreemathi.v
1
answer
The angles of a triangle are in the ratio 3 : 4 : 5.Find the smallest angle in degrees and the greatest angle in radians
jeemain
math
class11
ch3
trigonometric-functions
q90
angles
easy
asked
Oct 11, 2013
by
sreemathi.v
1
answer
Evaluate $40^{\large\circ}30'$
jeemain
math
class11
ch3
trigonometric-functions
q89
angles
easy
asked
Oct 11, 2013
by
sreemathi.v
1
answer
The area of $\Delta$le ABC in which $a=2,b=2.\angle C=60^{\large \circ}$ is
jeemain
math
class11
ch3
trigonometric-functions
q79
angles
easy
asked
Oct 11, 2013
by
sreemathi.v
1
answer
Which of the following number is/are rational?
jeemain
math
unit15
trigonometric-functions
q73
angles
easy
asked
Oct 10, 2013
by
sreemathi.v
1
answer
Evaluate $\sin^2\large\frac{\pi}{8}+$$\sin^2\large\frac{3\pi}{8}$$+\sin^2\large\frac{5\pi}{8}$$+\sin^2\large\frac{7\pi}{8}$
jeemain
math
class11
ch3
trigonometric-functions
q64
angles
easy
asked
Oct 10, 2013
by
sreemathi.v
1
answer
Evaluate $\sin(1560^{\large\circ})$
jeemain
math
class11
ch3
trigonometric-functions
q61
angles
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
A minute hand of a clock is 20cm long.How far does the tip of the hand move in 20 minutes.
jeemain
math
class11
ch3
trigonometric-functions
q58
angles
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
Find $\cos 55^{\large\circ}+\cos 65^{\large \circ}+\cos 175^{\large\circ}$
jeemain
math
class11
ch3
trigonometric-functions
q57
angles
easy
asked
Oct 9, 2013
by
sreemathi.v
2
answers
Find the value of $\sin(105^{\large\circ})$
jeemain
math
class11
ch3
trigonometric-functions
q55
angles
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
The value of expression $\large\frac{1-4\sin 10^{\large\circ}\sin 70^{\large\circ}}{2\sin 10^{\large\circ}}$
jeemain
math
class11
ch3
trigonometric-functions
q51
angles
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
The value of the expression $(\sqrt 3\sin 75^{\large\circ}-\cos 75^{\large\circ})$ is
jeemain
math
class11
ch3
trigonometric-functions
q50
angles
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
The value of $\tan 81^{\large \circ}-\tan 63^{\large\circ}-\tan 27^{\large\circ}+\tan 9^{\large \circ}$ is
jeemain
math
class11
ch3
trigonometric-functions
q46
angles
easy
asked
Oct 9, 2013
by
sreemathi.v
1
answer
The value of $\cos 12^{\large\circ}+\cos 84^{\large\circ}+\cos 156^{\circ}+\cos 132^{\large\circ}$ is
jeemain
math
class11
ch3
trigonometric-functions
q41
angles
easy
asked
Oct 8, 2013
by
sreemathi.v
1
answer
$\sin 47^{\circ}+\sin 61^{\circ}-\sin 11^{\circ}-\sin 25^{\circ}$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q40
angles
easy
asked
Oct 8, 2013
by
sreemathi.v
1
answer
The value of $\theta(0 \;< \theta\;<360^{\circ})$ satisfying $cosec \;\theta-2=0$ are
jeemain
math
class11
ch3
trigonometric-functions
q30
angles
easy
asked
Oct 8, 2013
by
sreemathi.v
1
answer
Two lines drawn through a point on the circumference of a circle divided the circle into three regions of equal area.Then the angle $\theta$ between the line is given by
jeemain
math
class11
ch3
trigonometric-functions
q24
angles
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
The angle between minute hand and hour hand of a clock at "half past 4" equals
jeemain
math
class11
ch3
trigonometric-functions
q23
angles
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
The numerical value of $\tan 20^{\circ}\tan 80^{\circ}\cot 50^{\circ}$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q16
angles
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
The maximum and minimum values of $7\cos\theta+24\sin\theta$ are equal to
jeemain
math
class11
ch3
trigonometric-functions
q9
angles
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
The value of $\sin(n+1)A\sin(n+2)A+\cos(n+1)A\cos(n+2)A$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q5
angles
easy
asked
Oct 4, 2013
by
sreemathi.v
1
answer
The value of $\cos(45^{\circ}-A)\cos(45^{\circ}-B)-\sin(45^{\circ}-A)\sin(45^{\circ}-B)$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q4
angles
easy
asked
Oct 4, 2013
by
sreemathi.v
1
answer
Which one is not periodic
jeemain
math
class11
ch3
trigonometric-functions
q3
angles
easy
asked
Oct 4, 2013
by
sreemathi.v
1
answer
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