Question

if sin a =3/4 calculate cos a and tan a

Answer 1

Hello dear friend !!

I hope this helps you .

Thanks !
:)

Answer 2

Thanks for your question !

We know that,

Sin a = 3/4

So, as before substituting values, p/h

Cos a = base / height

Hence, $b = \sqrt {h^2 - p^2}$

  $= \sqrt {4^2 - 3^2}$

               $= \sqrt {16 - 9}$

               $= \sqrt {7}$

Therefore, cos a = √7 / 4

tan a = p/b
= 3 / √7