Hi!

I was confused with this.

I have to find all the solutions for 0<x<360^{o}if sinethreex=(square root2)/2

So I was confused with this.

I know (square root2)/2 occurs in 45^{o}, also pi/4

Then it occurs at 135^{o}, also 3pi/4

I'm not sure if these 2 are the correct solutions.

I understand where sin (the y coordinate) is (sqrt2)/2

But I'm not sure what the sinethreex means.

Can someone explain.