Teachoo MCQ Test

10 Question MCQ (including Assertion)

Chapter 3 Class 11 Trigonometric Functions | 10 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.
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Question 1 of 10
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Question 1 of 10
NCERT Exemplar
If \(\tan \theta=3\) and \(\theta\) lies in third quadrant, then the value of \(\sin \theta\) is
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Question 2 of 10
NCERT Exemplar
The value of

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

is
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Question 3 of 10
NCERT Exemplar
If $$\tan \theta=-\frac{4}{3}$$ then \(\sin \theta\) is
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Question 4 of 10
NCERT Exemplar
Which of the following is not correct?
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Question 5 of 10
NCERT Exemplar
If \(\tan \alpha=\frac{1}{7}, \tan \beta=\frac{1}{3}\), then \(\cos 2 \alpha\) is equal to
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Question 6 of 10
NCERT Exemplar
If \(\tan \theta=\frac{a}{b}\), then \(b \cos 2 \theta+a \sin 2 \theta\) is equal to
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Question 7 of 10
NCERT Exemplar
The value of

$$ \cos \frac{\pi}{5} \cos \frac{2 \pi}{5} \cos \frac{4 \pi}{5} \cos \frac{8 \pi}{5} $$

is
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Question 8 of 10
NCERT Exemplar
If for real values of \(x, \cos \theta=x+\frac{1}{x}\), then
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Question 9 of 10
NCERT Exemplar
The value of \(\cos 12^{\circ}+\cos 84^{\circ}+\cos 156^{\circ}+\cos 132^{\circ}\) is
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Question 10 of 10
NCERT Exemplar
The value of \(\sin \frac{\pi}{18}+\sin \frac{\pi}{9}+\sin \frac{2 \pi}{9}+\sin \frac{5 \pi}{18}\) is given by
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