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" 1.Prove that "cos^(-1)(4)/(5)+cos^(-1)...

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

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

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

prove cos ^(-1) (4/5)+cos ^(-1) ((12)/(13))=cos ^(-1) ((33)/(65))

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)((63)/(65))

show that cos^(-1)""((4)/(5))+ cos^(-1) ((12)/(13)) =cos^(-1) ""((33)/(65))

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

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

Prove that: sin^(-1)((3)/(5))+cos^(-1)((12)/(13))=sin^(-1)((56)/(65))