complement of angle A is 20 degrees

Algebra
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Complement of angle A is 20 degrees less than half the supplement of angle A. Find the measure of angle A

Dec 22nd, 2014

X be the angle  A

Complementary angle = 90-x

Supplementary angle =180-x

90-x =1/2 (180-x) -20

90-x = 90-1/2x -20= 70 -1/2x

90-70 =x-1/2x=1/2x

20 =1/2 x      1/2 x= 20      x=40

Verification 50 = (180-40)/2-20= 70-20 ..............   (40 Degrees)



Dec 22nd, 2014

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