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" 8."cos^(-1)(15)/(17)+cos^(-1)(3)/(5)=c...

" 8."cos^(-1)(15)/(17)+cos^(-1)(3)/(5)=cos^(-1)(13)/(85)

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cos^(-1)(8/17)-cos^(-1)(5/13)=

Prove that sin^(-1)((8)/(17))+sin^(-1)((3)/(5))=cos^(-1)((36)/(85))

Prove that sin^(-1)((8)/(17)) +sin^(-1)((3)/(5)) =cos^(-1)((36)/(85)) .

Cos^(-1)(3/5)+Cos^(-1)(12/13)=

cos^(-1)(15/17)+2 tan^(-1)(1/5)=

cos^(-1)(15/17)+2 tan^(-1)(1/5)=

cos^(-1)(15/17)+2 tan^(-1)(1/5)=

Prove that sin^(-1)(8/(17))+sin^(-1)(3/5)=cos^(-1)((36)/(85))

Prove that sin^(-1)(8/(17))+sin^(-1)(3/5)=cos^(-1)((36)/(85))

Cos^(-1)(5/13)+Cos^(-1)(3/5)=Cos^(-1)xrArrx=