Question

right angled triangle PQR , if ㄥP=60° ㄥR=30° and PR=12 then find the values of PQ and QR​

Answer 1

Answer:

Given,

angle p = 60°

angle r = 30°

PR = 12

sin30° = PQ/PR

1/2 = PQ/12

PQ = 1/2*12

PQ = 6

cos 30° = QR/PQ

√3/2 = QR/12

QR = √3/2×12

QR = 6√3