Splinter cell:Special Force Agents

Sam fisher should be kill his enemy . If Sam be in the $\text(6,{\text{15}^{\circ}})$ coordinates and his enemy be in the $\text(8,{\text{75}^{\circ}})$ coordinates. Sam should be reach into enemy coordinates, If we suppose Sam's coordinates and his enemy's coordinates in the (Polar coordinates system) then what is the distance between the Sam and his enemy according to their coordinates.

Note: Input your answer as 5 dcimals places.