Question

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

Answer 1

Answer:

60°

Step-by-step explanation:

Sum of all angles of a triangle is 180°

:. x + 30 + 90 = 180

:. x + 120 = 180

:. x = 180 - 120

:. x = 60

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Answer 2

Step-by-step explanation:

the third angle is 60 degree

90+30 + x = 180

120+ x = 180

x = 60