We must find dy/dt given x=10,
Differentiate:
Plug in your knowns and you're all set.
Q:
A rocket, R, rises vertically from a point A on ground level. It is observed from another point B on the ground, where B is 10 km from A. When the angle of elevation has the value pi/4 radians, this angle is increasing at the rate of 0.005 radians per second. Find, in m/s, the velocity of the rocket at that instant.
Thank you for helping!