Question
Which angle is equal to twice its complement?
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Answer
Let the angle be $x$ According to the problem, $x=2 \times(90-x)$
$ x=180-2 x$
$x+2 x=180$
$3 x=180$
$x=\frac{180}{3}$
$x=60 $
$\therefore$ The angle is $60^{\circ}$
$ x=180-2 x$
$x+2 x=180$
$3 x=180$
$x=\frac{180}{3}$
$x=60 $
$\therefore$ The angle is $60^{\circ}$
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