Mathematics

In the given figure, what value of $x$ will make $AOB$ a straight line?

$x$ = $80$

SOLUTION
(d) $x$ = $80$
Because,
It is given that the angles of the side be $55^{o}$, $45^{o}$ and $(x)^{o}$.
= $x^{o} + 55^{o} + 45^{o}$ = $180^{o}$...$[\because Linear\,pair]$
= $x$ = $180-100$
= $x$ = $80$

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Single Correct Medium Published on 09th 09, 2020
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