Question

How to find the missing angle if the first two are 48 and 87 degrees​

Answer 1

If you are talking about the missing angle of a triangle then the angle missing measures 45 degrees.

Explanation:

A triangle has 3 angles which add up to 180 degrees.

Let x=the missing angle

180=48+87+x

180=135+x

45=x

Answer 2

45°

Explanation:

Add both sides up then subtract it form 180°