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Trig help +k

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Alex.W
Posts: 528 - Karma: 22
Hey guys! Having trouble with this question.. It's a proof so you have to pick one side and work with it until it equals the other side. I can't seem to get it...


Cotangent X(Cotangent X + Sine X) = Cosecant^2 X

I got the left hand side down to..

[Cosine^2 X + (Cosine X Sine^2 X)] / Sine^2 X

or using my identities..

[(1-Sine^2 X) + (Cosine X Sine^2 X)] / Sine^2 X

I'm stuck there and I don't know what to do.. Did I make a mistake or am I just blind and can't go any further? Need help!
Mar 22 2012 9:41PM
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Alex.W
Posts: 528 - Karma: 22
Nevermind. I misread the question. It's actually..

Cotangent X (Cotangent X + Tangent X) = Cosecant X

I don't know why I put Sine where Tangent was supposed to be...
Mar 22 2012 9:44PM
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PopsicleStand
Posts: 6890 - Karma: 147
IRL now dont need that class now didnt look LOL
Mar 22 2012 9:45PM
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PopsicleStand
Posts: 6890 - Karma: 147
but for real good luck

Mar 22 2012 9:46PM
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sndyrvr
Posts: 684 - Karma: 119
Here's a hint: put everything in terms of sin and cos then see what you can make out of it
Mar 22 2012 10:42PM
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