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Question

PQR, right-angled at Q, if PR=24cm, QR=12cm, then find the value of QRP.


A

30o

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B

60o

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C

45o

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D

90o

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Solution

The correct option is B

60o


In PQR,
cosR=QRPR=1224

cosR=12

Since cos60o=12

We have QRP=60o


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