Question

In ∆PQR, PQ:QR:RP = 3:4:5.Prove that the triangle is right angled. Find the right angle.

Answer 1

2 2 2
RP =QR+PQ
2 2 2
5=4+3
25=16+9
25=25
hence pqr is a right triangle

Answer 2

there the answer ------

1. PQ = 3 , QR = 4 , RP = 5
2. (RP)^2 = (QR)^2 + (PQ) ^2
3. (5)^2 = (4)^2 +(3)^2
4. 25 = 16 + 9

• 25 = 25

Thus, proved it is a right angled triangle.....

hope so it will really help you...