Please solve no 20,21

Please solve no 20,21 BP cm. nnd sin a rhombus tan e . value Of O E, find the value of p sine • the value of 5sin8-3cts9 5AnO+ (t) If 5 9 — 12 sin 6 O, find the value of sir. o 2sin6 - If e = — , find value of

(20) . We have, 5 \cos A - 12 \sin A = 0 \Rightarrow 12 \sin A = 5 \cos A \Rightarrow \frac{\sin A}{\cos A} = \frac{5}{12} \Rightarrow \tan A = \frac{5}{12} Now, \frac{\sin A + \cos A}{2 \cos A - \sin A} = \frac{\frac{\sin A}{\cos A} + \frac{\cos A}{\cos A}}{\frac{2 \cos A}{\cos A} - \frac{\sin A}{\cos A}} = \frac{\tan A + 1}{2 - \tan A} = \frac{\frac{5}{12} + 1}{2 - \frac{5}{12}} = \frac{17 / 12}{19 / 12} = \frac{17}{19} Kindly ask the remaining query in different thread .