Question 120

If two angles of a triangle are 21° and 38°, then the triangle is

Solution

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Two angles of triangle are 21° and 38°.

Let third angle be $$\theta$$

=> 21° + 38° + $$\theta$$ = 180°

=> $$\theta$$ = 180° - 59° = 121°

Since, $$\theta$$ > 90°, => It is obtuse angled triangle.

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