In triangle ABC, angle A is 30 degrees, AC = BC. Find angle C.
| May 1, 2021 | education
AC = BC (according to the problem statement);
angle A = 30 ° => isosceles triangle and angle B = 30 °;
The three angles in a triangle add up to 180 degrees.
180 ° = angle A + angle B + angle C;
angle C = 180 ° – (angle A + angle B);
angle С = 180 ° – (30 ° + 30 °);
angle С = 180 ° – 60 °;
angle C = 120 °.
Answer: 120 °.
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