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Trigonometric Ratio(sin,cos,tan)

10. Prove tha...

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10. Prove that tan square A +cot square A =sec square A cosec square A-2

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(Sec ^2 A+cosec^2A )square root=tan A+cot A

Q. Prove that
(tanA-tanB)²+ (1+tanAtanB)^{2
is equal to sec square A*sec squareB}

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