The resultant of two forces P and Q acting at an angle θ=
A√(P² + Q² + 2PQ Sinθ )
B√(P² + Q² + 2PQ Cosθ )
C√(P² - Q² - 2PQ Sinθ )
D√(P² + Q² - 2PQ Sinθ )
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A√(P² + Q² + 2PQ Sinθ )
B√(P² + Q² + 2PQ Cosθ )
C√(P² - Q² - 2PQ Sinθ )
D√(P² + Q² - 2PQ Sinθ )