For the angle between two lines, you need to assume its in first quadrant (or third quadrant), otherwise you won't get rid of the absolute values. Second and fourth quadrants definitely require a - in front because sinthetacostheta is negative, whilst tan phi is always positive (since phi is...
Livy c) was es, he's accusing her of being unpatriotic as she's forgotten her brothers both dead and living or something like that, Romans were weird in that they killed their sisters for crying
@Carrot I'm one of kurosaki's +1s, just a quick question is it possible for me to sit MX1 a bit earlier? I really need to leave early and I promise no spoilers :)