Practicing Success
ΔABC is right angled at B, if cot A = \(\frac{1}{2}\) , find the value of \(\frac{sinA\;(cos C)}{cosC\;(sin C)}\). |
-3 2 3 4 |
2 |
cotA = \(\frac{1}{2}\) (where 1 → P and 2 → B) H = \(\sqrt {2^2 + 1}\) = \(\sqrt {5}\) Put in \(\frac{sinA\;(cos C)}{cosC\;(sin C)}\) ⇒ \(\frac{\frac{2}{\sqrt {5}} × \frac{2}{\sqrt {5}}}{\frac{2}{\sqrt {5}} × \frac{1}{\sqrt {5}}}\) = \(\frac{4}{5}\) × \(\frac{5}{2}\) = 2 |