Question

if tan 2A is equal to COT A + 60 find the value of a where to -a is an acute angle​

Answer 1

Step-by-step explanation:

tan2A = cot(A+60°)

=> tan2A = tan{90°- (A+60°)}

=> 2A = 90°-(A+60°)

=> 2A = 90°- A - 60°

=> 2A+A =90°-60°

=> 3A = 30°

=> A = 30°/3

=> A = 10°