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I have been doing math for 6 hours straight and my brain is fried. These are the last questions due on my hw and I don't understand. Please help!!!

Any kind of insight would help.

Thanks so much!!

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- September 19th 2013, 01:26 PMnhowardPlease help due in 2 hours!! :(
Screenshot by Lightshot <----

I have been doing math for 6 hours straight and my brain is fried. These are the last questions due on my hw and I don't understand. Please help!!!

Any kind of insight would help.

Thanks so much!! - September 19th 2013, 06:09 PMchiroRe: Please help due in 2 hours!! :(
Hey nhoward.

In terms of Q5,Q6,Q7 you need to find the values which the inequalities have in common.

We know that sin(x) is > 0 when x is in [0,pi] and < 0 when x is in (pi,2pi). cos(x) is > 0 when x is [0,pi) and (3*pi/2,2pi]

With regards to trigonometric functions do you have to find a value for theta or is it something else? The reason I ask is because they give values for r which implies that you need to use that to find something. - September 19th 2013, 08:31 PMProve ItRe: Please help due in 2 hours!! :(
- September 20th 2013, 10:05 AMMINOANMANRe: Please help due in 2 hours!! :(
nhoward Prove it is right..you have to show us some of your work...anyway for Q5,6,7 if you draw a Unit Circle..you will find the answers to your problems immediately.