Mathematics

# If two supplementary angles are in the ratio $1:2$, then the bigger angle is

$120^o$

##### SOLUTION
Option $(A)$ is correct.
Two supplementary angles are in the ratio $1:2$
So, let two angles be $x$ and $2x$
Given that, angles are supplementary
$\therefore x+2x=180^o$
$\Rightarrow 3x=180$
$\Rightarrow x=\dfrac{180^o}{3}$
$\Rightarrow x=60^o$
Therefore, bigger angle is $2x=120^{\circ}.$

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Single Correct Medium Published on 09th 09, 2020
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