Question

11. The third angle of a triangle if two angles
are 90° and 60°
A) 30°
B) 60°
C) 70°
D) 40°​

Answer 1

Answer

option (A)

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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

<1 + <2 + <3 = 180°

90° + 60° + <3 = 180°

<3 = 180° - 150° = 30°

Hence, the third angle of the triangle is 30°