Mathematics

# If two supplementary angles are in the ratio $4:5$, then the angles are __________.

$80^o, 100^o$

##### SOLUTION
If two angles are supplementary, then the sum of the angles is $180^o$
If the ratio is $4:5$, let angles are $4x$ and $5x$
Now we know, $4x+5x=180^o$
$\Rightarrow 9x=180$
$\Rightarrow x=20$
Therefore, angles are $100^o$ and $80^o$.

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Single Correct Medium Published on 09th 09, 2020
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