I have an assignment to turn in tomorrow that will be a large part of my grade. I have had virtually no time to work over break and many other things to work on. Yada yada yada everyone rationalizes why they didn't get stuff done so it doesn't really matter why. I need to know how to do these problems by tomorrow morning. If someone was kind enough to type out the explanations I could finish it during lunch easily, I used to know how but forgot over a couple weeks, guess that goes to show my learning wasn't very deep.
So here are the problems I will need to know by tomorrow. I appreciate anyone who can help me out right away.
1.
2.
3.
4.
Any and all help right away is very much appreciated. As I said this is really important and urgent.
Sorry forgot to add these should all be solved on the interval of 0 <= theta <= 2pi.
Could you elaborate slightly? My memory of the periodic functions is a bit hazy at the moment. Although I am looking at some more examples currently. Also my brain is a bit fried at the moment.
And yes that was exactly what I meant, sorry I'm not great with the math tags having just started.
in that case, or
hmm, that will be a pain. how is your knowledge of reference angles or of the graphs of sine and cosine?Could you elaborate slightly? My memory of the periodic functions is a bit hazy at the moment. Although I am looking at some more examples currently. Also my brain is a bit fried at the moment.
ok then,And yes that was exactly what I meant, sorry I'm not great with the math tags having just started.
.............we are going to solve for sine. subtract 2 from both sides
...........divide by 3 on both sides
.............square both sides
.............divide by 2 on both sides
which is the same as question 1
(by the way, be sure to check your solutions in the original equation. sometimes when you square things and such, you introduce erroneous solutions).
of course we can tell that this equation has no solution from the get-go. so doing all of this, while you would want to show your work, is a waste of time. why is that?
I solved that out and factored it, and I got cos = -1/2 and cos = 1. Right now I'm thinking cos = 1 or 2 pi is the answer. Is that right?
I'm sorry, I messed up when I wrote that to you. The sin value is not actually under the square root, only the two. So it doesn't quite work out the way you did it.
yes, or . but after that, you are wrong. you are supposed to find , for what values of do the above happen?
ok, then you tell me where to go with it this time. the plan of attack is the same. we are going to isolate the . so what's the equation? what does ?
I worked out everything now for the most part except for these two. The sin of 2 theta = 1/2 one. Please just work this out someone, I really tried to remember and work out periodic properties but I'm failing atm.
Also I tried that one that worked out to a quadratic and didn't factor.
I put it through the quadratic equation and came up with.
Did I do it wrong? I can't come up with an exact value of theta for this junk.