CUET Preparation Today
$({cosec} A-\cot A)(1+\cos A)=?$ |
$\cos A$ $\sin A$ $\cot A$ $cosec~A$ |
$\sin A$ |
( cosecA - cotA ) . ( 1 + cosA ) = ( \(\frac{1}{sinA}\) - \(\frac{cosA}{sinA}\) ) . ( 1 + cosA ) = \(\frac{1 - cosA}{sinA}\) ) . ( 1 + cosA ) = \(\frac{1² - cos²A}{sinA}\) ) { using , sin²A + cos²A = 1 } = = \(\frac{sin²A}{sinA}\) ) = sinA |
