Question 1024326
{{{A=sin^(-1)(x)}}}
{{{B=cos^(-1)(y)}}}
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{{{sin(A+B)=sin(A)cos(B)+cos(A)sin(B)}}}
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{{{sin(A)=sin(sin^(-1)(x))=x}}}
{{{cos(B)=cos(cos^(-1)(y))=y}}}
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{{{cos(A)=cos(sin^(-1)(x))=sqrt(1-x^2)}}}
{{{sin(B)=sin(cos^(-1)(y))=sqrt(1-y^2)}}}
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{{{sin(sin^(-1)(x) + cos^(-1)(y))=x*sqrt(1-x^2)+y*sqrt(1-y^2)}}}