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In traingle pqr right angle atq PQ=3 and PR=6 determine angle QPR and angle PRQ

Posted by Babli Tiwari 5 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Pankaj Malik 5 years, 5 months ago

∆PQR is a right angle triangle by Pythagoras theorem (PR)^2=(PQ)^2+(QR)^2 6^2=3^2+((QR)^2 36=9+(QR)^2 36-9=(QR)^2 (QR)^2=27 QR=✓9×3 QR=3✓2 AngleQPR =60° because side opposite to P is ✓3/2 times the hypo(PR) Angle PRQ=30° because side opposite to R is 1/2 of the hypo(PR)

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