Question

A skier skis along a circular ski trail that has a radius of 1.3 km. The skier starts at the East side of the ski trail and travels in the CW (clockwise) direction. Let
θ
represent the varying number of radians the skier has swept out in the CW direction.

Write an expression (in terms of
θ
) to represent the skier's distance to the East of the center of the ski trail (in km).

1.3cos(theta)
Correct

Write an expression (in terms of
θ
) to represent the skier's distance to the North of the center of the ski trail (in km).

1.3sin(theta)
Incorrect
Ok what was wrong with the last one.

Answer 1

theta is measured clockwise.