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In Figure, ray O S stand on a line P O Q...

In Figure, ray `O S` stand on a line `P O Qdot` Ray `O R` and ray `O T` are angle bisectors of `/_P O S\ a n d\ /_S O Q` respectively. If `/_P O S=x ,` find `/_R O T`

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`/_POS+/_SOQ=180^0-(1)`
`/_POS and /_SOQ` is linear pair of angles.
`/_POR=/_ROS
/_SOT+/_TOQ=/_SOQ`
`/_SOT=/_TOQ`
`x+/_SOQ=180^0`
`/_SOQ=180^0-x-(2)`
`2/_SOT=180^0-x`
...
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