Alright so here is my problem, first day of college started I am in Calculus and have never took a trigonometry class in my life. Because Calculus involves some trigonometry the teacher assigned us a trig review for homework and I have no clue on how to do it, thanks for the help I get.
Here are some of the problems:
Provide all EXACT solutions for the variable on the interval [0,2pie)
2sin3pie/4 = X
2cos(x) = -1
3sec(7pieX/3) = -2(square root of 3)
if you could explain how u got the answers I would appreciate it thank you
Thanks so much pickslides I have a few more questions if you have the time if not youve helped me enough already and im grateful that you did.
Cos(2Pie/3) = 2x
0 = 1 + Sin (3x/2)
Tanx = Cotx
Edit: Also for the second problem how did you come up with theta = pie/3
Also I know its Pi not Pie but Mozilla was fixing it
There are some special triangles you need to commit to memory if you are going to be successful in completing a course in circular trigonometry.
Remember these Special right triangles - Wikipedia, the free encyclopedia
Assuming you are aware of the different sides on a right angled triangle then.
Consider
and the triangle from the wiki page above. Then the angle that yields for cosine is
I.e
Now for
You have to use the symmetry of the unit circle to find where Cosine is a negative value.
Have a look at
http://www.clarku.edu/~djoyce/trig/functions.html
Alright I think im starting to understand this, its a 30-60-90 triangle and that means there is the 60 degree angle and the cos would = 1/2 because the 1 is adjacent on the 30-60-90 and the 2 is the hypotenuse. Then you get the pi/3 from the chart.
Alright now how would I relate tanx = cotx
Thanks for help so far