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Cot theta minus tan theta equal to two cossquare theta minus one divided by sin theta into cos theta |
| Answer» Cot∅-tan∅=2cos²-1/sin∅×cos∅Sol... ByR.H.S. taking all tern seperately ( 2cos∅/sin∅×cos∅)-1/sin∅×cos∅ Seperating 1as= sin²+cos² ( 2cos∅/sin∅×cos∅) -(sin²/sin×cos+cos²/sin×cos) SOLVE 2COT²-tan∅-cot Cot∅-tan∅HENCE PROVED | |