read what you said a few times but don't get some of it...
but for the problem would it be X = 0 and the principal values are X = \pi/2
and what I am doing right now and for the past 5 days is reviewing trigonometry i just have a little trouble with some of it.
yeah i did mean X= cos-1(1)
new here and didnt see the tags... sorry...
calc says cos-1(1) = 0 but i kind of remember cos x = 90º
which one is a principal value?
for this problem i only looked the last 3 digits of the last 2 rows
192. 210. 192
18. ? 18
i noticed 192 + 18 = 210 and then it goes back to 192 so i thought maybe that 18 + 18 = 36?
only thing i could see a pattern in the last 2 rows.
that would work to i just wasnt sure if there was any special rules with cos being multiplied..
so the final answer is cos x= 1? or would it be like... cos-1(cosx) = cos-1
X = cos-1
or do i have to do something else?
1.Solve the following for the principal values of the indicated variable.
2. 3cos x-1=2
3. 3cosx - 1 = 2
3cosx+1=0
im not sure what to do from here, I would ask a teacher or a tutor but it is summer work for a calculus course and i forgot what to do. I have looked in a...