Practice Trigonometric Functions - CBSE Class 11 Offered by Unacademy

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Trigonometric Functions

Quick practice

Question 1 of 5

If $\sin A=\frac{7}{12}$ , then find the value of $\cos 2 A$ .

A

$\frac{3}{4}$

B

$\frac{23}{72}$

C

$\frac{4}{5}$

D

$\frac{\sqrt{2}}{5}$