Question

Find x :
Sin 3x = 2sin 30° Cos 30°​

Answer 1

Step-by-step explanation:

sin3x=2sin30.cos30

sin3x=2(1/2).rootof3/2

sin3x=root3/2=sin60

sin3x=sin60

3x=60

x=20

Answer 2

Step-by-step explanation:

sin 3x= 2sin 30° cos 30°

sin 30°=1/2, cos 30°=√3/2

sin 3x=2×1/2×√3/2

sin 3x=√3/2

The value of sin √3/2 is 60°

3x=60°

X=60°/3

X=20°