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1. |
Q: If $$ {Acos^{2}θ+Bsin^{2}θ}={sin^{2}θ(sec^{2}θ+1)\over{sec^{2}θ-1}}$$ and cotθ=? |
A. | $${\sqrt{B-2\over2-A}}$$ |
B. | $${\sqrt{B-1\over2-A}}$$ |
C. | $${\sqrt{B-1\over A-2}}$$ |
D. | $${\sqrt{2-B\over 2-A}}$$ |
Answer» C. $${\sqrt{B-1\over A-2}}$$ | |