Recent questions tagged trigonometry

A ladder whose length is 10 m lies on a wall at a height of 5 m. What could be the angle of inclination in radian measure ?

asked Jun 27, 2018 by meena.p

1 answer

In the triangle PQR, the hypotenuse is $1000$ and $\cos \;60^{\circ}= \large\frac{1}{2}$.<br> What is the length of the side PQ ?<br>

asked Jun 26, 2018 by meena.p

1 answer

The hypotenuse of a triangle as shown in the figure is 25 units . What is its area ?

asked Jun 26, 2018 by meena.p

1 answer

If $\sin x =\large\frac{1}{\sqrt 3}$, then which of the following must be true ?

asked Jun 26, 2018 by meena.p

1 answer

Find the value of $\cos 30^{\circ}+\sin 30^{\circ}$

asked Jun 26, 2018 by meena.p

1 answer

A tree breaks down in a storm and stands in the front as shown in the figure. What is the height of the tree if its tip is 10 m from the bottom?

asked Jun 26, 2018 by meena.p

1 answer

Which of the following angel is coterminal with $750^{\circ}$ ?

asked Jun 26, 2018 by meena.p

1 answer

If $\cot x = \large\frac{24}{7}$, then what is $\cos x$

asked Jun 26, 2018 by meena.p

1 answer

A particle travels along a unit circle and stops at $\large\frac{7 \pi}{6}$ radius. What will be the coordinate at that point ?

asked Jun 26, 2018 by meena.p

1 answer

Which of the following has the same trigonometric values as $450^{\circ}$ ?

asked Jun 26, 2018 by meena.p

1 answer

Which of the following represents $\large\frac{2\pi}{3}$ radius given in degrees ?

asked Jun 26, 2018 by meena.p

1 answer

In right triangle $ABC$, right angled at $C,$ if $\tan A = 1,$ then the value of $2 \sin A \cos A$ is

asked Jul 27, 2016 by meena.p

1 answer

consider the equation sec θ+cosec θ=a, θ ∈(0,2π)-{ π/2, π,3π/2}

asked Jul 4, 2015 by excellentdeals18

0 answers

The angle of elevation of the sun , when the length of the shadow of a verticle pole is equal to its height is _____

asked Nov 5, 2014 by meena.p

1 answer

At a point on level ground, the angle of elevation of a vertical tower is found to be such that its tangent is $ \large\frac{5}{12}$ . On walking $192\;m$ towards the tower. the tangent of the angle of elevation is $\large\frac{3}{4}$. The height of the tower is

asked Nov 5, 2014 by meena.p

1 answer

The captain of an aeroplane who is flying at an alttitude of $1200\;m$ sights two ships at an angle of depression of $60^{\circ}$ and $30^{\circ}$. The distance between the two ships is ________

asked Nov 5, 2014 by meena.p

1 answer

The value of $\sin (70^{\circ}+ \theta) - \cos (20^{\circ}- \theta )$=________

asked Nov 4, 2014 by meena.p

1 answer

If A and B are angle and $\sin A = \cos B$, then $A+B$ =______

asked Nov 4, 2014 by meena.p

1 answer

If $\sec \theta + \tan \theta =m$ and $\sec \theta - \tan \theta =n$ then $mn $ =______

asked Nov 4, 2014 by meena.p

1 answer

The value of $(cosec^2 \theta -1) \tan ^2 \theta =$ _____

asked Nov 4, 2014 by meena.p

1 answer

The value of $ \sin ^2 32+ \sin ^2 58$ is ________

asked Nov 4, 2014 by meena.p

1 answer

If $ 6x = \sec \theta $ and $ \large\frac{6}{x}$$= \tan \theta $, then the value of $36 \bigg(x^2 - \large\frac{1}{x^2} \bigg)$ is __________

asked Nov 3, 2014 by meena.p

2 answers

If $ \sin \theta + \cos \theta = \sqrt 2 \cos (90^{\circ}- \theta)$ then $\cot \theta $ is

asked Nov 3, 2014 by meena.p

1 answer

If $ \cos \theta = \large\frac{2}{3}$, then $2 \sec^2 \theta+2 \tan ^2 \theta -7$ is equal to

asked Nov 3, 2014 by meena.p

1 answer

If $x \tan 45^{\circ} \cos 60^{\circ} = \sin 60^{\circ} cot 60^{\circ}$, then x=_______

asked Nov 3, 2014 by meena.p

1 answer

The value of $\theta$ satisfying $\sqrt 3 \sin \theta =\cos \theta$ is ________

asked Nov 3, 2014 by meena.p

1 answer

The value of $\theta$ if $3 \tan ^2 \theta -1 =0$ is

asked Nov 3, 2014 by meena.p

1 answer

If $2 \cos 3 \theta =1$ then the value of $\theta$ is ________

asked Nov 3, 2014 by meena.p

1 answer

In a right angled triangle right angle at A, if $\tan C= \sqrt 3$, then the value of $\sin B \cos C + \cos B \sin C$ is _______

asked Nov 3, 2014 by meena.p

1 answer

Evaluate $\sin 105^{\large\circ}+\cos 105^{\large\circ}$

asked May 21, 2014 by sreemathi.v

1 answer

Find the value of $\mathrm{cosec}(-1410^{\large\circ})$

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

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

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

asked May 20, 2014 by sreemathi.v

1 answer

The wheel of a railway carriage is 40cm in diameter and makes 6 revolutions in a second. How fast is the train going?

asked May 20, 2014 by sreemathi.v

2 answers

Find the value of $cosec(-\large\frac{41\pi}{4})$

asked Apr 22, 2014 by sreemathi.v

1 answer

$1+i+i^{2}+i^{3} + i^{4}+i^{5}+i^{6}---+i^{2n}\;$ is

asked Apr 18, 2014 by yamini.v

1 answer

If $\;z_{1} = \sqrt{3} + i \sqrt{3}\;$ and $\;z_{2} =\sqrt{3} + i\;$ , then find the quadrant in which $\;(\large\frac{z_{1}}{z_{2}})\;$ lies

asked Apr 18, 2014 by yamini.v

1 answer

What is the reciprocal of $\;3+ \sqrt{7} i$ ?

asked Apr 18, 2014 by yamini.v

1 answer

The conjugate of the complex number $\;\large\frac{1-i}{1+i}\;$ is

asked Apr 17, 2014 by yamini.v

1 answer

Prove : $2\sin ^2\large\frac{3\pi}{4}$$+2\cos^2\large\frac{\pi}{4}$$+2\sec^2\large\frac{\pi}{3}$$=10$

asked Apr 17, 2014 by sreemathi.v

1 answer

Find the values of the trigonometric function $\sin(-\large\frac{11\pi}{3})$

asked Apr 17, 2014 by sreemathi.v

1 answer

Solve $\;x^{2} + x + 1=0 $

asked Apr 16, 2014 by yamini.v

1 answer

Find the radian measure corresponding to the following degree measure :-$240^{\large\circ}$

asked Apr 16, 2014 by sreemathi.v

1 answer

Find the multiplicative inverse of the complex number $\;\normalsize -i\;$

asked Apr 10, 2014 by yamini.v

1 answer

Express the given complex number in the form $\;a+ib : (-2-\large\frac{1}{3} \normalsize i)^{3}$

asked Apr 9, 2014 by yamini.v

1 answer

Express the complex number given below in the form $a+ib$: $(5i)\;(-\large\frac{3}{5}$$i)$

asked Apr 9, 2014 by balaji.thirumalai

1 answer

Express the given complex number in the form $\;a+ib : (1-i)^{4}$

asked Apr 9, 2014 by yamini.v

1 answer

Express the given complex number in the form $\;a+ib :\;[( \normalsize \large\frac{1}{3} +\normalsize i \normalsize \large\frac{7}{3}) + (\normalsize 4 + \normalsize i \normalsize \large\frac{1}{3})-( \normalsize -\large\frac{4}{3}+ \normalsize i)]$

asked Apr 9, 2014 by yamini.v

1 answer

Express the complex number $(1-i)-(-1+6i)$ in the form $a+ib$

asked Apr 9, 2014 by yamini.v

1 answer

Ask Questions, Get Answers