If tan (A =\frac{2}{3}) then cos² A-sin² A = ? | Mathematics | SolveeIt | Solveeit

Today, August 18

Question

If tan $A =\frac{2}{3}$ then cos² A-sin² A = ?

A

$\frac{4}{13}$

B

$\frac{5}{13}$

C

$\frac{7}{13}$

D

$\frac{9}{13}$

Answer

$\frac{5}{13}$

Explanation

Solution

The correct option is (B): $\frac{5}{13}$