Find all the angles Theta, with 0 <=theta<=2pie radians, that satisfy each equation.

(Use radians not degrees. Round your answers to four decimal

places. Separate multiple answers with a comma.)

(a) sin theta = -1

(b) cos theta = 1

(c) sin theta = 0.4

(d) cos theta = -0.6

(e) tan theta = -2.5