Question

if tan 3θ=1 then find the value of sin 2θ

Answer 1

tan 3 theta = 1
=) tan 3theta = tan 45
=) theta = 45/3 = 15

sin 2theta = 2*15=30
sin 30 = 1/2

Answer 2

Here I used both trigonometric and inverse trigonometric functions formulae
I hop you get it.