6.2 Trigonometric Functions: Unit Circle Approach/107

$f(30)=\sin(30)$
$g(30)=\cos(30)$
$h(x)=2x$
$p(x)={\frac {x}{2}}$

${\frac {1}{2}}$ + ${\frac {\sqrt {3}}{2}}$ = ${\frac {1+{\sqrt {3}}}{2}}$

$(h\circ p)(30^{\circ })=h(p(30^{\circ })=h\left({\frac {30^{\circ }}{2}}\right)=h(15^{\circ })=2\cdot 15^{\circ }=30^{\circ }$