Shawn's answer to e_____k______k______o's Secondary 3 E Maths Singapore question.
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Another method is to use similar triangles.
Since angle PQS = angle QSR and angle QPS = angle RQS, triangle PQS is similar to QSR.
QS = 5 (from Pythagoras)
QR / PS = QS / QP
QR = 3 x 5 / 4
= 3.75
Since angle PQS = angle QSR and angle QPS = angle RQS, triangle PQS is similar to QSR.
QS = 5 (from Pythagoras)
QR / PS = QS / QP
QR = 3 x 5 / 4
= 3.75
Date Posted:
4 years ago
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