Question

In triangle pqr, pq = pr, angle p = 50 degrees. find angle q and angle r​

Answer 1

Answer:

R.E.F.image 

In △PQR,∠PQR=90∘

BY Pythagoras theorem,

PR2=PQ2+QR2

⇒(5)2=PQ2+(4)2

⇒(5)2−(4)2=PQ2

⇒PQ2=25−16

⇒PQ2=9

⇒PQ=9

⇒PQ=3

tanR=QRPQ=43.