Obtain the expressions for the radius of curvature of a plane curve in rectangular coordinates and polar coordinates

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr