Question

Mrs. magil asks her students to draw a right triangle with one angle measuring 63 degrees. Which equation can be used to determine a, the measure of the third angle in their triangle?

Answer 1

Answer: a = 180 - 63 - 90

Explanation:

180 degrees in a triangle

90 degrees in a right triangle

180 = 63 + 90 + a

move 63 and 90 to the other side

a = 180 - 63 - 90