Question

Represent the following complex number in trigonometric form:
$-\sin {110}^{\circ }+i\cos {110}^{\circ }$

Answer 1

$\sin (-110{)}^{\circ }$$+i\cos (-110{)}^{\circ }$

$⟹\sin (90-200{)}^{\circ }$$+i\cos (90-200{)}^{\circ }$

$⟹\cos (200{)}^{\circ }$$+i\sin (200{)}^{\circ }$

$⟹e^{i{200}^{\circ }}$