Question

Trigo question # ?

Answer 1

This time, I can't even get one of the answers

Answer 2

you have two factors. one or both must be 0 for a solution
(cos x -3 ) will never be zero for real x
so you solve 3 sin x - 2 =0
sin x= 2/3
There will be 2 solutions between 0 and 2pi

Answer 3

So , i need to take arc sine?

Answer 4

yep

Answer 5

Oh.. I know where I got wrong, thanks!!!

Answer 6

Be sure you are in radian mode. (but you know that already)

Answer 7

That's where I got wrong... No wonder why I couldn't find out the answer before. Thanks!!!