SOLUTION: An angle is equal to twice its compliment, what is the angle?

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Let the required angle be x.
as per given instructions, x =2(90-x)
here 90-x means compliment of x.
thus solving the above equation we get,
x=180-2x
thus, 3x=180
thus, x=180/3
thus x =60
so the required angle is 60 degree.