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किसी Delta PQR में,यदि 3sin P+4 cos ...

किसी ` Delta PQR ` में,यदि ` 3sin P+4 cos Q =6` और ` 4sin Q +3 cos P=1 ` तो `angleR` बराबर है|

A

`(pi)/(4)`

B

`(3pi)/(4)`

C

`(5pi)/(6)`

D

`(pi)/(6)`

लिखित उत्तर

Verified by Experts

The correct Answer is:
D
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