Question

Angles Q and R of a ∆PQR are 25° and 65°.Write which of the following is true:

(I)PQ²+QR²=RP²
(II)PQ²+RP²=QR²
(III)RP²+QR²=PQ²

Answer 1

Answer:

( ll) is correct

Step-by-step explanation: in triangle PQR,

angle Q + angle R = 25+65= 90 degrees

therefore angle P= 90 degree

therefore QR is hypotenuse

and PQ, RP are other two sides  

BY pythagoras thm

B^2 + P^2 = H^2  ( here B and P are base and perpendicular and H is hypotenuse)