Resolving the components of position vector in horizontal and vertical direction. ∴ Horizontal component, rx=r‌cos‌θ =10‌cos‌60∘ [∵cos‌60∘=‌
1
2
] =10×‌
1
2
=5 units Vertical component, ry=r‌sin‌θ =10‌sin‌60∘  [∵sin‌60∘=‌