Question

tan = a/b ,then evaluate-------> a sin + b cos / a sin - b cos= ? options are 1}a sq.+ b sq. / a sq. - b sq. 2} a sq. - b sq. / a sq. + b sq.' 3}a + b / a-b 4}a-b / a+b

Answer 1

4 ) a- b / a+b.......... this is right answer I think