In the diagram above, forces P, Q and 50N are acting on a body at M. If the system is in equilibrium, calculate, in terms of \(\theta\), the magnitude of P.

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\(\frac{50 \cos \theta}{\sin (\theta + 45)°}\)

\(\frac{50 \cos \theta}{\cos (\theta + 45)°}\)

\(\frac{50 \sin \theta}{\cos (\theta + 45)°}\)

\(\frac{50 \sin \theta}{\sin (\theta + 45)°}\)

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