Question

Find the complement of the following angle:
${77}^{\circ }$

Answer 1

Finding complementary angle:

1. When the sum of the two angles is equal to ${90}^{\circ }$, the two angles are said to be complementary angles.
2. The complement angle can be found by subtracting the given angle from ${90}^{\circ }$.

The complement angle of ${77}^{\circ }$,
$={90}^{\circ }-{77}^{\circ }$
$={13}^{\circ }$
Hence, the complement angle of ${77}^{\circ }$is ${13}^{\circ }$.