Question

3tansquare(2x-20)=1​

Answer 1

3tan²(2x-20)=1

tan

2

(2x−20)=1÷3

tan(2x - 20) = + - 1 /√3

tan(2x−20)=+−1÷√3

tan(2x-20°) =±tan30°

2x-20°=±30°

.

at 30°

.

2x=30°+20°

2x=50°

x=25°

.

at x= -30°

2x-20°=-30°

2x=-30°+20°

2x=-10°

x=-5°