For each of the following values of cos theta, determine the radian values of theta if theta is btwn pi and 2pi.
- 1/2 MY answer is theta= pi/3 but textbook says it is 4pi/3....and i have NO idea why...I have this same issue with other questions of this type, I get the RAA right, but not the coefficient
Terminal arm of an angle in standard position passes thru each of the following points. Find radian value of angle in internal [0, 2pi].
point (-7, 8)
I got sin theta= y/r
= 8/10.63 (using pythagorean theorem)
theta = .752476694 but textbook answer is 2.25....once again, i have no idea how they came to this.
When do i use sin^-1 vs. sin by itself? o.0 HELP!! Unit test tmrw afternoon!!