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" 21.सिख Do that "cos^(-1)(3)/(5)+cos^(-...

" 21.सिख Do that "cos^(-1)(3)/(5)+cos^(-1)(12)/(13)=sin^(-1)(63)/(65)

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Prove that : cos^(-1).(3)/(5)+ cos^(-1).(12)/(13) = sin^(-1)((63)/(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)4/5+cos^(-1)(12)/(13)=cos^(-1)(33)/(65)

Prove that cos^(-1)4/5cos^(-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: 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