If the conplement od angle is equal to the supplement of thrice of it. find the angle
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Let the angle be x.
Then according to question,
3(90 - x) = 180 - x
=>270 - 3x = 180 - x
=>270 - 180 = -x + 3x
=>90 = 2x
=>90/2 = x
=>45 = x
Therefore the angle is 45°
Then according to question,
3(90 - x) = 180 - x
=>270 - 3x = 180 - x
=>270 - 180 = -x + 3x
=>90 = 2x
=>90/2 = x
=>45 = x
Therefore the angle is 45°
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