Question

triangle A=30°B=40°C=?
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Answer 1

Answer:

Sum of angles of a triangle = 180

A = 30, B = 40, C = ?

A + B + C = 180

30 + 40 + C = 180

70 + C = 180

C = 180-170 = 110 degrees

Answer 2

Answer:

We know that the sum of the angles of a triangle is 180°.

so, A+B+C=180°

=>30+40+C=180

=>C=180-70=110°