Q. Prove that: cos(theta)-sqrt(1+sin2(theta))/sin(theta)-sqrt(1+sin2(theta) = tan(theta)

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Q. There are n GM's between 1/25 and 25. if the ratio of first mean to third mean is 1:25.find n. Soln: here, no. of GM's (n) = ? first term (a) =1/25 last term (b) =25 first mean/third mean = 1/25 we have, common ratio ...
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Q.Prove that: [1+Tan^2(pie/4-A)] / [1-Tan^2(pie/4-A)] = cosec2A Soln: L.H.S. = [1 + Tan2(p/4-A)]/[1 – Tan2(p/4-A)] = 1/[{1 – Tan2(p/4-A)}/{ 1 + Tan2(p/4-A)}] = 1/[cos2(p/4-A)] ...
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