Question

lesson 4. angles and lines
lines and angles in the real world
at what angle would a carpenter cut a board to create a complementary angle if the other end was cut to 35°?
a. 35°
b. 90°
c. 55°
d. 45°
check answer

Explanation:

Step1: Recall complementary - angle definition

Complementary angles add up to 90°.

Step2: Calculate the required angle

Let the unknown angle be $x$. If one angle is 35°, then $x + 35^{\circ}=90^{\circ}$, so $x = 90^{\circ}-35^{\circ}=55^{\circ}$.

Answer:

a. 55°