Question 665593
Complementary angles total 90 degrees.
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As an equation
x + 4x = 90
Solve for x
5x = 90
Divide both sides by 5
x = 18
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Using x
4x = 4(18) = 72
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Angles are {{{highlight(18)}}} and {{{highlight(72)}}} degrees.
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Check
{{{cartoon(
72 + 18,
90)}}}
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