Question

Can someone help me with this question

Answer 1

the sum of the angles of a triangle = 180°

A =60°+a

B =60°-a

we calculate the measure of the angle C:

C = 180°-(60+a+60-a)

C= 180-120=60°

we can also see that +a-a=0

so the angle C =180-60-60 = 60°

Explanation: