The complement of angle A is 20° less than half the supplement of angle A. Find the measure of angle A.
ANSWERS
2015-11-07 03:25:19
C = complement angle S = supplement angle C + 20° = S/2 and C + A = 90° => C = 90° - A S + A = 180° => S = 180° - A so 90° - A + 20° = (180° - A)/2 110° - A = 90° - A/2 20° = A/2 A = 40°
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