Question

Help me please
explain answer

Answer 1

`m\angle3=84\textdegree`. So, the correct option is D.

Use the given information to write down equations. We are given that
`m\angle1=96\textdegree`. We are also given that ∠1 and ∠3 are supplementary angles, which means that:

m∠1+m∠3=
`180\textdegree`.

Substituting the value of m∠1, we get:

m∠3=
`180\textdegree`−m∠1

=180 −96

=
`84\textdegree`