Thread: TI-89 Titanium: EVALUATING
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Old August 27th, 2008, 10:40 PM
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Originally Posted by tupac View Post
What if i have this:
arccos(0.3) on [0, 2pi)

Does it change anything?
And for the first problem do i need to include the [0,pi) anywhere when i input the numbers?
Also what should i press for my calculator to show: arccsc
The range of the arcos function is not defined over [0, 2pi).

I'm guessing that your question is actually how to solve \cos \theta = 0.3 for 0 \leq \theta < 2 \pi. You go to the F2 menu and select 1: solve(

Then it's

solve(cos x = 0.3, x)|0<x<2pi
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