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

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- June 17th 2008, 12:20 AMlemonteaTrignometry
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 - June 17th 2008, 12:46 AMTheEmptySet