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27 November, 21:03

In ΔABC, the measure of angle A is 5° more than 3 times the measure of angle B. Angle C measures 20°less than angle B. Determine the measures of angles A, B, and C.

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  1. 27 November, 21:17
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    A = 122°, B = 39°, C = 19°

    Step-by-step explanation:

    (5+3B) + B + (B-20) = 180

    5B = 195

    B = 39°

    A = 5 + 3 (39) = 122°

    C = 39 - 20 = 19°
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