Question

the measure of an angle is 3.5°. what is the measure of its complementary angle?

Explanation:

Step1: Recall complementary - angle formula

Complementary angles add up to 90°. Let the given angle be $\alpha = 3.5^{\circ}$ and the complementary angle be $\beta$. Then $\alpha+\beta = 90^{\circ}$.

Step2: Solve for the complementary angle

$\beta=90^{\circ}-\alpha$. Substitute $\alpha = 3.5^{\circ}$ into the formula: $\beta = 90^{\circ}-3.5^{\circ}=86.5^{\circ}$.

Answer:

$86.5$