Question

Two angles of a triangle measure 90° and 30°. Find he measure of the third angle.

Answer 1

Sum of all angles of a ∆ is 180°

∠A : 90°

∠B : 30°

∠C = x = 180° - (90°+30°)

∠x = 180° -120°

= 60°

Answer 2

Step-by-step explanation:

sum of three angles in an triangle is 180°

let, ∆ABC is the triangle

angle A=90° and angle B=30° and angle C =x°

90°+30°+x°=180

x°=180-120

x=60

Third angle is 60°