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| 1. |
if 7cosecA-3cotA=7,prove that 7cotA-3cosecA=3 |
| Answer» Take 7 to lhs and 3cotA to rhs.... take 7 common frm lhs... now multiply cotA on both sides........ then put cot sq.A= 1+cosec sq. A in lhs..... then solve it....yu will get the answer | |