Homework Help Request

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Anonymous
Homework Help Request 2015-12-26 20:33:12 Post No. 15762
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Homework Help Request Anonymous 2015-12-26 20:33:12 Post No. 15762 [Report]

I'm should be in college by now, but I didn't pass math and now I'm struggling with my last unit.

I know it seems to be quite simple, but I have no idea what the endgame is and can't get assistance with it as we're on our winter break.

I had the problem cscxsecx/csc^2 + sec^2 which I simplified to 1/sinxcosx

>cscxsecx/csc^2 +sec^2
>(1/sin)(1/cos) / (1/sin)^2 + (1/cos)^2
>sin^2 + cos^2 / sinxcosx
>1/sinxcosx

Is this correct?
Also, should 1-cos^2/sin simplify to sin?

>sin^2= 1-cos^2
>sin^2/sin= sin

I feel that it's wrong, but I'm not sure of what else to do with sin^2

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Anonymous 2015-12-26 21:02:52 Post No.15794
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Anonymous 2015-12-26 21:02:52 Post No.15794 [Report]

Oi bro, I think the last part (1-cos^2/sin) might be correct, but the first I have no fucking clue.
May the calculator be with you!

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Anonymous 2015-12-26 21:12:44 Post No.15800
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Anonymous 2015-12-26 21:12:44 Post No.15800 [Report]

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No, it's not correct. You can check your answers on Wolfram Alpha (http://www.wolframalpha.com/input/?i=cscxsecx%2Fcsc%5E2+%2B+sec%5E2), by the way. I've attached my solution.

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Anonymous 2015-12-26 21:23:44 Post No.15808
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Anonymous 2015-12-26 21:23:44 Post No.15808 [Report]

>>15800
Thanks anon, I'll work on it a bit more later. I'm kind of a moron when it comes to math, but I'm sure it'll come around

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Anonymous 2015-12-26 21:30:06 Post No.15815
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Anonymous 2015-12-26 21:30:06 Post No.15815 [Report]

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>>15800
Oh wait, not sure if it'd make a difference but it's set up kind of like this

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Anonymous 2015-12-26 23:37:59 Post No.15934
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Anonymous 2015-12-26 23:37:59 Post No.15934 [Report]

>>15815
Of course it makes a difference. 4/2 + 2 is not the same as 4/(2+2). Always include parentheses or write in proper notation when there's a risk of ambiguity.

Here is a correct simplification: http://mathb.in/49064

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Anonymous 2015-12-26 23:39:44 Post No.15936
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Anonymous 2015-12-26 23:39:44 Post No.15936 [Report]

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Obviously not OP, but kudos to all you mathy types.

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Anonymous 2015-12-26 23:48:09 Post No.15942
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Anonymous 2015-12-26 23:48:09 Post No.15942 [Report]

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>>15936
No problem. Trigonometric simplifications are kind of bullshit, though.