I just need someone to guide me on how to get started on these. Generally I change the identities I spot into its equivalent, before proceeding to get lost.
Anyway, hopefully I can format these questions correctly:
a) 2sinx -cotx -cscx = 0
b) sin2x + cosx = 0
c) sinx - cosx = 0
Thank you, JeWiSh and arpitagarwal82. I just got done with the homework packet and ended up with only two mistakes, that I'm still trying to wrap my head around:
1) tanx + secx = 1
2) sin2x + cosx = 0 (I realize I already asked this, but I got it wrong. After applying the quadratic formula, I ended up with 1/2 and -1. I looked at the unit circle and got 60, 180, and 300 degrees. Where did I screw up?)