Question

solve fo x if cos(x-30)=sin3x

Answer 1

you know that sin(90-x)=cos x
now solve it!!

Answer 2

explanation???? cant reall focus at the moment paper 3 test tmrw

Answer 3

As said before sin(90-x)=cos(x)
so here
sin(90-3x)=cos(x-30)
>>>sin(3x)=sin(90-(x-30))
>>>>sin 3x=sin(120-x)
>>>>>3x=120-x
so x=30
got it?

Answer 4

got that awer need general solution

Answer 5

thanxfor that though