△PQR, right-angled at Q, if PR=24cm, QR=12cm, then find the value of ∠QRP.
30o
60o
45o
90o
In △PQR, cosR=QRPR=1224
cosR=12
Since cos60o=12
We have ∠QRP=60o
PQR is a triangle right angled at P. If PQ = 10 cm and PR = 24 cm, find QR.