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cos^(-1)((4)/(5))+cos^(-1)((12)/(13))=...

`cos^(-1)((4)/(5))+cos^(-1)((12)/(13))`=

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Prove that cos^(-1)((3)/(5))+cos^(-1)((12)/(13))+cos^(-1)((63)/(65))=(pi)/(2)

Prove that : cos^(-1).(3)/(5)+ cos^(-1).(12)/(13) = sin^(-1)((12)/(5))

Prove that : cos^(-1).(3)/(5)+ cos^(-1).(12)/(13) = sin^(-1)((63)/(65))

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

cos^(-1)""(3)/(5) +cos ^(-1) "" (12)/(13) +cos ^(-1) "" (63)/(65)=(pi)/(2)

Prvoe that sin^(-1)""(3)/(5) + cos^(-1) ""(12)/(13) = cos^(-1) ""(33)/(65) .

The value of 169e^(i)(pi+sin^(-1)((12)/(13))+cos^(-1)((5)/(13))) is

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

Prove that cos^(-1)4/5cos^(-1)(12)/(13)=cos^(-1)(33)/(65)