Short Quiz - Chapter 3 Class 11 Trigonometric Functions

Question 1 of 5

NCERT Exemplar

The minimum value of $3 \cos x+4 \sin x+8$ is

A 5 B 9 C 7 D 3

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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 $\tan \theta=20$

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Question 3 of 5

NCERT Exemplar

If $\tan \mathrm{A}=\frac{1}{2}, \tan \mathrm{~B}=\frac{1}{3}$, then $\tan (2 \mathrm{~A}+\mathrm{B})$ is equal to

A 1 B 2 C 3 D 4

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Question 4 of 5

NCERT Exemplar

If $\sin \theta+\cos \theta=1$, then the value of $\sin 2 \theta$ is equal to

A 1 B $\frac{1}{2}$ C 0 D -1

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Question 5 of 5

NCERT Exemplar

If $\sin \theta$ and $\cos \theta$ are the roots of the equation

$$ a x^2-b x+c=0 $$

then $a, b$, and $c$ satisfy the relation

A $a^2+b^2+2 a c=0$ B $\quad a^2-b^2+2 a c=0$ C $a^2+c^2+2 a b=0$ D $\quad a^2-b^2-2 a c=0$

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Class 6