A particle is projected with a speed u at angle `theta` with the horizontal. Consider a small part of its path near the highest position and take it approximately to be a circular arc. What is the radius of this circle? This radius is called the adius of curvature of the curve at the point.
A. `(u^(2)sin^(2)theta)/g`
B. `(u^(2)cos^(2)theta)/g`
C. `(u^(2)tan^(2)theta)/g`
D. `u^(2)/g`
