Question

Given sin x=0.5 what is cos x

Answer 1

$sinx=0,5=\frac{1}{2}$

$sin^2x+cos^2x=1$
$(\frac{1}{2})^2+cos^2x=1$
$\frac{1}{4}+cos^2x=1$
$cos^2x=\frac{3}{4}$
$cosx=\frac{\sqrt{3}}{2}$
or
$cosx=-\frac{\sqrt{3}}{2}$

:)

Answer 2

Answer:

the answer is 0.86603

hope this helps