Short Quiz

Question 1 of 5

NCERT Exemplar

The value of

$$ \sin 20^{\circ} \sin 40^{\circ} \sin 60^{\circ} \sin 80^{\circ} $$

is

A $-\frac{3}{16}$ B $\frac{5}{16}$ C $\frac{3}{16}$ D $\frac{1}{16}$

Select one option. Answers are shown after the test.

Question 2 of 5

NCERT Exemplar

Which of the following is not correct?

A $\sin \theta=-\frac{1}{5}$ B $\cos \theta=1$ C $\sec \theta=\frac{1}{2}$ D $\tan \theta=20$

Select one option. Answers are shown after the test.

Question 3 of 5

NCERT Exemplar

If $\tan \theta=3$ and $\theta$ lies in third quadrant, then the value of $\sin \theta$ is

A $\frac{1}{\sqrt{10}}$ B $-\frac{1}{\sqrt{10}}$ C $\frac{-3}{\sqrt{10}}$ D $\frac{3}{\sqrt{10}}$

Select one option. Answers are shown after the test.

Question 4 of 5

NCERT Exemplar

Number of solutions of the equation $\tan x+\sec x=2 \cos x$ lying in the interval $[0,2 \pi]$ is

A 0 B 1 C 2 D 3

Select one option. Answers are shown after the test.

Question 5 of 5

NCERT Exemplar

The value of $\sin \left(45^{\circ}+\theta\right)-\cos \left(45^{\circ}-\theta\right)$ is

A $2 \cos \theta$ B $2 \sin \theta$ C 1 D 0

Select one option. Answers are shown after the test.

Class 6