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Prove that tan{(pi)/(4)+(1)/(2) "cos"^(-...

Prove that `tan{(pi)/(4)+(1)/(2) "cos"^(-1)(a)/(b)}+tan{(pi)/(4)-(1)/(2) cos^(-1)((a)/(b))}=(2b)/(a)`.

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ARIHANT PRAKASHAN-VERY SIMILAR TEST 9-Section B
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  7. An urn contains 4 white and 6 red balls. Four balls are drawn at rando...

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  8. Using differentials, find the approximate value of (3.68)^(3//2).

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  11. If sin 2x = (2t)/(1 + t^(2)), tan y = (2t)/(1 - t^(2)) then find (dy)/...

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  12. Solve (dy)/(dx) + y = cosx - sinx.

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  20. Find the vector equation of a plane which is at a distance of 6 units ...

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