Question

Prove cosa/1-tana+sina/1-cota=cosa+sinalevel of water rise in an hour

Answer 1

Answer:

Answer is quite simple.

First of all simplify RHS write tan and cot im terms of sin and cos. Then take lcm. After doing this we would get (sin^2-cos^2)/cos-sin. Apply identity of a^2-b^2. We will get sin +cos. Question is solved.

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