Originally Posted by

**finalfantasy** ^ when do you know you should sub n in for 0, 1 or 2 if the angle is in between 0 and 2 pi?

If one out of the 2 answers from that angle is in between that interval, you would sub in n for that? as seen when you added 3pi /8? I'm terribly slow at getting this, but what does that do? Give you the ... coterminal, related angle ? :S

And can you help me with this one too ^.^

2. Find all solutions of each equation.

a) cot x = 2.3 (I can find it with special angles, but not this)

b) 5 cos 3x = -3

3. c) 2sinx - 1 = -2

You people here are very kind! Thanks!