Answer
a) $60^{\circ}$
b) $150^{\circ}$
Work Step by Step
a) The formula to find the complement of an angle $\theta$ is:
$90^{\circ} - \theta$
Determine the complement of the given angle:
$90^{\circ}$ - $30^{\circ}$ = $60^{\circ}$
b) The formula to find the supplement of an angle $\theta$ is:
$180^{\circ} - \theta$
Determine the supplement of the given angle:
$180^{\circ}$ - $30^{\circ}$ = $150^{\circ}$
