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[" In a "Delta PQR" if "3sin P+4cos Q=6"...

[" In a "Delta PQR" if "3sin P+4cos Q=6" and "4sin Q+3cos P=1" ,then the angle R is equal to "],[[" (A) "(3 pi)/(4)," (B) "(5 pi)/(6)," (C) "(pi)/(6)," (D) "(pi)/(4)]]

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