Question

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

Answer 1

Answer:

Angles of triangle measures 180 degree

90 + 30 + third angle =180

120 + third angle =180

Third angle =180-120

Third angle = 60 degree.

Answer 2

Answer:

Third angle is 60 degree.

Step-by-step explanation:

Let a triangle ABC, such that

∠A=90 ,∠B=30

Now,

∠A+∠B+∠C=180

⇒90 +30 +∠C=180

⇒∠C=180−120

∴∠C=60

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