Question

If sin A = 3 / 4 calculate CosA and tanA​

Answer 1

$\cos(a) = \sqrt{1 - { \sin}^{2}a } \\ = \sqrt{1 - \frac{9}{16} } \\ = \frac{ \sqrt{7} }{4}$
$\tan(a) = \frac{ \sin(a) }{ \cos(a) } \\ = \frac{ \frac{3}{4} }{ \frac{ \sqrt{7} }{4} } \\ = \frac{3}{ \sqrt{7} }$

Answer 2

Heya!!! see the solution paper for your better solution...