Question

If cot 3A = sin 45º.cos 45º + cos 60°, then A is equal to​

Answer 1

Answer:

A = 15°//

Step-by-step explanation:

cot 3A = sin 45°.cos 45° + cos 60°

           = $\frac{1}{\sqrt{2} } * \frac{1}{\sqrt{2} } + \frac{1}{2}$

           = $\frac{1}{2} + \frac{1}{2}$

           = 1//

cot 3A = 1//

cot 45° = 1//

3A = 45°

A = 45/3 = 15°//

HOPE IT HELPS.

MARK AS BRAINLIEST.

THANK AND RATE :)