Question

ratios/measures of angle.
sin
cos​

Answer 1

$\sin(30) = \frac{1}{2}$

$\sin(45) = \frac{1}{ \sqrt{2} }$

$\sin(60) = \frac{ \sqrt{3} }{2}$

$\cos(60) = \frac{1}{2}$

$\cos(45 = \frac{1}{ \sqrt{2} } )$

$\cos(30) = \frac{ \sqrt{3} }{2}$

Answer 2

$\boxed {\underline {\mathbb {SOLUTION:-}}}$

$sin 30=\frac{1}{2} \\sin45= \frac{\sqrt {1}}{2}\\sin60=\frac{\sqrt{3}}{2}$

hence

$cos 30 =\frac{\sqrt{3}}{2}\\cos 45= \frac{1}{\sqrt{2}}\\cos 60 = \frac{1}{2}$