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Question

If one angle of a triangle is 100° and the other two angles are in the ratio 2 : 3, find the angles.

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Solution

We know that one of the angles of the given triangle is 100°.We also know that the other two angles are in the ratio 2:3.Let one of the other two angles be 2x.Therefore, the second angle will be 3x.We know that the sum of all three angles of a triangle is 180°.100°+2x°+3x°=180°5x°=180°-100°5x°=80°x°=80°5x°=16°2x°=2×162x°=32°3x°=3×163x°=48°Thus, the required angles are 32° and 48°.

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