Please look at the image. I already figured out b, which I'm pretty sure is 2pi/3. However, I'm confused on figuring out a. This is what I tried:
I used the unit circle to find sin(-pi/4).
My answer isn't correct, so could anyone please explain how I should solve for b? Thanks!
When x = - pi/12 what is sin -3 pi/12 ? = - sqrt2/2
-2 * -sqrt2/2 +1 = a
Do simialr for 'b' 2* sin 3b + 1 = 1
2 * sin 3b = 0
sin 3b = 0
b = pi/3