Question

find unknown angle in figure ABC A=40°,B=50°,C=?​

Answer 1

ς =90°

We know that sum of all angle of triangle is 180 °

so,

Angle A + Angle B + Angle C =180

40° + 50° + angle C= 180°

90°+ angle c = 180°

angle c = 180° - 90°

Angle c = 90°