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| 1. |
Prove the following Identity?????+????+ ?+????????= ?????3 |
| Answer» Given cosA/(1+sinA) +(1+sinA)/cosAOn taking the LCM we get,={cos²A +(1+sinA)²}/cosA.(1+sinA)Combining the like terms and adding and also we know that,use sin²A+cos²A =1=(1+1+2sinA)/cosA(1+sinA)=2(1+sinA)/cosA(1+sinA)=2/cosA=2secA | |