11. two forces p and q acting at a point at an angle 6 have their resultant (2 n + 1) p+q2 and when at an ang 90-0), the resultant is (2 n - 1) p2+q, show th ta

11. Two forces P and Q acting at a point at an angle 6 have their resultant (2 n + 1) p+Q2 and when at an ang 90-0), the resultant is (2 n - 1) p2+Q, Show th tan 6= (n - 1)/(1 +