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cos^(- 1)(8/17)-cos^(- 1)(5/13)=cos^(- 1...

`cos^(- 1)(8/17)-cos^(- 1)(5/13)=cos^(- 1)xt h e nx=`

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If cos^(-1)(5/13)+cos^(-1)(3/5)=cos^(-1)x then x=

cos(sin^(-1)(5/13))=

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

cos ^ (- 1) ((8) / (17)) - cos ^ (- 1) ((5) / (13)) = cos ^ (- 1) xthenx =

Cos^(-1)(5/13)+Cos^(-1)(3/5)=Cos^(-1)xrArrx=

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 .