I'm back! And this time, I'm much needier than before
I have my first Trig test coming up Tuesday and sadly I've had to miss a few days of class
due to problems at home. Can you guys help me get caught up so that I don't bomb this first test? If you can help with one or all of these problems, grateful I will be.
I'm not looking for answers, so much as directions please, thanks guys:
For the test I get to use my TI - 83 plus calculator, as well as 3 note cards, so if you have any calculator shortcuts or good notes, I'll take them!
1.) Convert -8+5i to polar form. & Convert (8,120) to rectangular form
(Yeah I really don't have a clue on this one, I semi understand what a polar coordinate but I must have missed this class.)
2.) Converting from pi to radians and radians to pi etc.
EX: 28.8° to pi form of a radian, or 128.7° to decimal form of a radian, or 8pi/5 to degrees
3.) 2^x+4 = 4^x-1
(I missed this day also, no clue where to begin on this one)
4.) Logarithms:
EX: log3 (x+4) - log3 (x) = 4
log8 of 30
write log2 (a^3/b^2c^4) with two or more logs
4.) e^x+2 = 18, solve for x
5.) pH= 13.8, find H3O, also: H3O+ = 2.74 * 10^-3 find pH
Man, if you guys could steer me in the right direction, or help me with any of this, I'd be grateful. I'm off to khanacademy and google, I'll keep checking back.