adelinek adelinek

14-12-2016
Mathematics

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In triangle ABC (not shown), the measure of angle B is 3 times the measure of angle A, and the measure of angle C is 19 more than the measure of angle B. Find angle A

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D4B3STP30P1E D4B3STP30P1E

14-12-2016

The answer is Angle A=23°.
23*3=69°
69+19=88
88+69=157°
157+23=180°
This is correct because all three angles of a triangle equal 180°

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