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A wrecking ball (weight = 4500 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3100 N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°.

(a) Find the tension in the support cable.

(b) Find the magnitude of the force exerted on the lower end of the boom by the hinge at point P.

For the first problem I tryed doing IW=IW and didn't get the right answer.

For the seconde problem i understand the froces i just don't know how to put them into the equation. (https://www.physicsforums.com/showthread.php?p=811650)