In a right angled triangle one angle is 30andtheather angle is xand the exterior angle of the triangle is y . find the measure of x And y?

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Solution

We know that the sum of the angles of a triangle is 180°.
since it is a right angled triangle and one angle is 30°, the other angle
x=180-(30+90)=180-120=60°
Exterior angle of a triangle is the sum of the two opposite interior angle
Therefore y=90+30=120°

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