The resultant of two forces P and Q acting at an angle $$\theta $$ is
The resultant of two forces P and Q acting at an angle $$\theta $$ is Correct Answer $$\sqrt {{{\text{P}}^2} + {{\text{Q}}^2} + 2{\text{PQ}}\cos \theta } $$
The resultant of two forces P and Q acting at an angle $$\theta $$ is Correct Answer $$\sqrt {{{\text{P}}^2} + {{\text{Q}}^2} + 2{\text{PQ}}\cos \theta } $$