Mathematics

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


ANSWER

$$x$$ = $$80$$


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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