urgent ..
formula for sin-1X + sin-1Y , sin-1X -sin-1Y
cos-1X + cos-1Y
cos-1X - cos-1Y
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Answer:for sin^-1 x- sin ^-1 y=sin ^-1(x(1-y^2)^1/2)- (y(1-x^2))^1/2...
Sorry for others it's difficult to type.. hope tis helped u
Step-by-step explanation:
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