Question
PQRS is a quadrilateral, PQ=7cm, QR=8cm and PR=7.5cm. (a) Calculate angle PSR (b) Hence if SR=SP, calculate angle SPR
Answers
oobleck
In triangle PQR, use the law of cosines to determine the angles.
Unfortunately, just knowing that triangle PSR is isocseles tells you nothing about its other sides or angles.
Unfortunately, just knowing that triangle PSR is isocseles tells you nothing about its other sides or angles.