Due to the lecturer not knowing himself, I don't know how exactly to approach some of the following problems.
1. sec(90°+x)sin(180°+x) + sin(-x)
2. __sin(-x)_ ______1______ __tanx___
sin(180°+x) + secx.sin(90°+x) - cot(90°+x)
Solve for x:
1. 3cot(90°+x) = tanx.sinx
2. tan(90°-x) = sec(3x+10°)cotx
I feel a bit stupid asking, BUT then, the only stupid question is the one not asked!
Thanks in advance for any help and/or advice..