Question

Find all solutions in the interval [0, 2π).

(sin x)(cos x) = 0

Answer 1

sinx = 0 or cos x = 0
sin x = 0 if x = 0 or pi
cos x = 0 if x = pi/2 or 3pi/2

Answer 2

How did you get that?

Answer 3

By using the unit circle. Once you have more experience you will know those values. Remember: cos is like x and sin is like y

Answer 4

Oh, okay thanks.

Answer 5

yw