In a triangle PQR with right angle at Q, the value of ZPis x, PQ=7 cm and OR
24 cm, then find sin x and cos x.
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In △PQR
(PQ)
2
+(QR)
2
=(PR)
2
(24)
2
+(7)
2
=(PR)
2
⇒(PR)
2
=576+49=625
⇒PR=25
Now S is the mid point of PR
∴RS=
2
PR
=
2
25
=12.5cm
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