Question

Plz help ASAP

solve for x in
1. sin x = cos 2x
2. cos 2x = sin 3x
3. sin x = cos x​
thx

Answer 1

1. x = π/6 + 2πn/3, for any integer n

2. Is not possible to solve (I think)

3. x = π/4 + πn, for any integer n