Question

et mA = 40°. If B is a complement of A, and C is a supplement of B, find these measures. mB = ° mC = °

Answer 1

Alright, lets get started.

We have given angle A = 40°

We are also given angle B is complement of A.

Complementary angles are two angles whose sum is 90, it means

angle B =
`90- A`

angle B =
`90 - 40`

angle B = 50° Answer

Now given, angle C is supplement of angle B.

Supplementary angles are two angles whose sum is 180°.

Means angle C =
`180 - B`

angle C =
`180 - 50`

angle C = 130° : Answer

Means angle B = 50° and angle C = 130°

Hope it will help :)