Question

Pls ans it giving step by step explanation..........(ans of Q3)

Answer 1

Answer:

$\huge \cos \alpha = \frac{3}{5} \\ \\\implies \: \huge \sin \alpha = \frac{4}{5} \\ \\ and \: \: \huge \tan \alpha = \frac{4}{3} \\\\ now \\ \huge \frac{sin\alpha - \frac{1}{\tan \alpha} }{2\tan \alpha} \\\\ \huge = \frac{ \frac{4}{5} - \frac{1}{ \frac{4}{3} } }{2 \times \frac{4}{3} } \\\\ \huge = \frac{ \frac{4}{5} - \frac{3}{4} }{ \frac{8}{3} } \\ \\\huge = \frac{\frac{16 - 15}{20}}{ \frac{8}{3} } \\ \\ \huge = \frac{1}{20} \times \frac{3}{8} \\ \\ \huge = \frac{3}{160}$

Thus, option a is the correct answer.

Answer 2

Answer:

option A) 3/160 is correct answer