Question

(1 + sin) (1 -sin) =3/4 find the value of sec​

Answer 1

$(1 + sin)(1 - sin) = \frac{3}{4} \\ = > 1 - {sin}^{2} = \frac{3}{4} \\ = > {cos}^{2} = \frac{3}{4} \\ = > cos = \sqrt{ \frac{3}{4} } \\ = > cos = \frac{ \sqrt{3} }{2} \\ = > \frac{1}{cos} = \frac{2}{ \sqrt{3} } \\ = > sec = \frac{2}{ \sqrt{3} }$