NCERT Exemplar MCQ Quiz

Question 1 of 7

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 2 of 7

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 3 of 7

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 4 of 7

NCERT Exemplar

If $\tan \alpha=\frac{1}{7}, \tan \beta=\frac{1}{3}$, then $\cos 2 \alpha$ is equal to

A $\sin 2 \beta$ B $\sin 4 \beta$ C $\sin 3 \beta$ D $\cos 2 \beta$

Select one option. Answers are shown after the test.

Question 5 of 7

NCERT Exemplar

$\cos 2 \theta \cos 2 \phi+\sin ^2(\theta-\phi)-\sin ^2(\theta+\phi)$ is equal to

A $\sin 2(\theta+\phi)$ B $\cos 2(\theta+\phi)$ C $\sin 2(\theta-\phi)$ D $\cos 2(\theta-\phi)$

Select one option. Answers are shown after the test.

Question 6 of 7

NCERT Exemplar

The value of $\tan 75^{\circ}-\cot 75^{\circ}$ is equal to

A $2 \sqrt{3}$ B $2+\sqrt{3}$ C $2-\sqrt{3}$ D 1

Select one option. Answers are shown after the test.

Question 7 of 7

NCERT Exemplar

If $\tan \alpha=\frac{m}{m+1}, \tan \beta=\frac{1}{2 m+1}$, then $\alpha+\beta$ is equal to

A $\frac{\pi}{2}$ B $\frac{\pi}{3}$ C $\frac{\pi}{6}$ D $\frac{\pi}{4}$

Select one option. Answers are shown after the test.

Class 6

Class 7

Class 8

Class 9

Class 10

Class 11

Class 12

Courses

Interesting

Popular

Class 6

Class 7

Class 8

Class 9

Class 10

Class 11

Class 12

Courses

Interesting

Popular