As shown in the figure below, the upper leg muscle $($quadriceps$)$ exerts a force which is carried by a tendon over the kneecap $($the patella$)$ at the angles given in the figure. If the force supplied by the upper muscle is $1975N,$ determine the magnitude and direction of the force exerted by the kneecap on the upper leg bone $($the femur$).$

magnitude

$N$

direction

Find Direction