Thread: Trignometry

1) Simpifly
sin^2 (sin^-1 (4/x))


2) a,b (0,2pi)and sin (a)=sqrt(3)/2, cos(b)=-sqrt(3)/2, tan(a+b)=-1/sqrt(3), then give the exact value of a and b in terms of pi

a: ____pi b:_____pi

Originally Posted by lemontea

2) a,b (0,2pi)and sin (a)=sqrt(3)/2, cos(b)=-sqrt(3)/2, tan(a+b)=-1/sqrt(3), then give the exact value of a and b in terms of pi

a: ____pi b:_____pi

There are two angles such that

Also with cosine

and

So for this to be true

Hint: for the first one