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Prove that 2sin^-1[3/5]-tan^-1[17/31]=pi...

Prove that `2sin^-1[3/5]-tan^-1[17/31]=pi/4`

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`=2 theta-tan^(-1) (17/31)`
`=2tan^(-1) (3/4)-tan^(-1) (17/31)`
`=tan^(-1)(frac{2. 3/4}{1- 9/16})`
`=tan^(-1) (24/7)-tan^(-1) (17/31)`
`=pi/4`
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RD SHARMA-INVERSE TRIGONOMETRIC FUNCTION-Solved Examples And Exercises
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  3. Prove that 2sin^-1[3/5]-tan^-1[17/31]=pi/4

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