Calculus
posted by Anna .
A line through the origin, rotates around the origin in such a way that the angle, ¦È, between the line and the positive xaxis changes at the rate of d¦È/dt for time t¡Ý0. Which expression gives the rate at which the slope of the line is changing?
a) d¦È/dt
b) cos¦È*d¦È/dt
c) sin¦È*d¦È/dt
d) (1/(cos¦È)^2)*d¦È/dt
e) tan¦È*d¦È/dt

that weird 'e' symbol is supposed to be a theta sign