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cos^(- 1)(4/5)+cos^(- 1)(63/65)=...

`cos^(- 1)(4/5)+cos^(- 1)(63/65)=`

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

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) + cos^(-1)( 63/65) =pi/2 .

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

sin^(-1) ( 12/13 ) + cos^(-1) (4/5) + tan^(-1) (63/16) =

Prove that: sin^(-1) (12/13)+cos^(-1) (4/5)+tan^(-1) (63/16)=pi

Prove the following : sin^(-1)(12/13)+cos^(-1)(4/5)+tan^(-1)(63/16)=pi

Show that sin^(-1) (12/13)+cos^(-1)(4/5)+tan^(-1)(63/16) = pi .