Mathematics

# From the adjoining figure find $x$,  i $AOB$ is a straight line. Hence complete the following Which is an obtuse angle?

##### SOLUTION
R.E.F image
Now we know
$\angle POA +\angle POB =180^{\circ}$    [linear pair]
$x+10+x-10=180^{\circ}$
2x=180
$[x=90^{\circ}]$
Now $\angle POA$ =x+10=$100^{\circ}$
& $\angle POB=x-10=90-10=80$
$\therefore \angle POA$ obtuse angle.

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Subjective Medium Published on 09th 09, 2020
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