20.26QR-9cm and PR-PQİcrn. Determine the valse ofgiven ΔΡ0R, right- – InterviewSolution

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20.26QR-9cm and PR-PQİcrn. Determine the valse ofgiven ΔΡ0R, right-anRAPOR, right-angled atsin R cos R.27

Answer»

Pr-pq=1PR=1+pqqr=9

by Pythagoras theorem,pq²+qr²=pr²pq²+81=(1+pq)²=1+pq²+2pq80=2pqpq=40PR=41sin r+ cos rpq/PR+qr/PR40/41+9/4149/41

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