I am having trouble with the following question
In the following figure if PQ=QS and QR=RS and angle PRS is 100 degrees what is the measure of angle QPS (Ans = 20)
Now here is how far i got: Since QR=RS its angles would be same and we know that PRS is 100 so we get
2a + 100 = 180 so a = 40 so RQS is 40 and QSR is 40 . Am I doing this correct ? How will i get PSQ or QPS ? (I need to do this without Trign. ratios)