Question

Cos question

Answer 1

ok so solve for cos... because of the domain,

\[2 \cos(\theta) = 1~~so~~~\cos(\theta) = \frac{1}{2}\]

find the angle

you need the 1st quadrant and 4th quadrants

1st quadrant its \[1st ~quarant = \theta~~~~~4th ~quadrant~ = (360 - \theta)\]

Answer 2

do you have a detailed link that explains this stuff? i don't think i even learned this yet..

Answer 3

have a look at these online notes

http://tutorial.math.lamar.edu/

they are well written with plenty of examples... sorry I didn't get the specific trig stuff... but its in there

Answer 4

oh yeah, i see them. i'll look at them right now, thanks.