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Prove that cos^(-1) (3/5)+cos^(-1) (12/1...

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

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

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

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

Prove that: sin^-1 (3/5) +cos^-1 (12/13)+cot^-1 (56/33)=pi/2

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

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

Prove that :tan^(-1)(63)/(16)=sin^(-1)(5)/(13)+cos^(-1)(3)/(5)

Prove that: tan^(-1)(63)/(16)=sin^(-1)(5)/(13)+cos^(-1)(3)/(5)