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PartyBullshiit
March, 2024

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So, who like trig?

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tBatt
Posts: 9632 - Karma: 580
solve the equation for all exact solutions in the domain {0
May 5 2009 8:46PM
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tBatt
Posts: 9632 - Karma: 580
FUCK it disappeared

solve the following equation for all exact solutions of the domain {0,2pi}

3cos(squared)t = sin(squared)t


word.
May 5 2009 8:49PM
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uni-corn
Posts: 13846 - Karma: 651
12
May 5 2009 8:51PM
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Pocahontas
Posts: 64 - Karma: 29
verify or solve?
May 5 2009 8:56PM
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tBatt
Posts: 9632 - Karma: 580
solve.

May 5 2009 9:03PM
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comeatmebro
Posts: 10720 - Karma: 66
fuck. i'm doing my trig test now. shit sucks.
May 5 2009 9:04PM
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rj.
Posts: 3323 - Karma: 28
sorry, i am no help to you. i am still working with shapes
May 5 2009 9:08PM
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DANETRON
Posts: 6671 - Karma: 137
Hello Ted/Erin
May 5 2009 9:10PM
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Talacious[Tally]
Posts: 1686 - Karma: 189

is t the variable for theta? if not you need to add your thetas

May 5 2009 9:38PM
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enigma
Posts: 37 - Karma: 10
stole my icon bitch
May 5 2009 9:42PM
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Jordan
Posts: 4079 - Karma: 2,122
You have to use your identities.

 Click for larger image

You use the first one, and make that sin squared into a cos or vis versa whatever you want to do and then solve from there.
May 5 2009 9:49PM
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Jordan
Posts: 4079 - Karma: 2,122
awwwwww shit.

well you would use:

sin^2 + cos^2 = 1

so say you want to make that sin squared into cosine it would be:

sin^2=1-cos^2
May 5 2009 9:51PM
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Mac.
Posts: 953 - Karma: 24
Cos^2 = 1/4
so cos =1/2 so pi/3 and 5 pi/3


May 5 2009 9:51PM
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Mac.
Posts: 953 - Karma: 24
Explanation
3cos^2(t) = sin^2 (t)
Identity: sin^2= 1-cos^2

3cos^2(t) = 1-cos^2(t)

3cos^2(t)+cos^2(t)=1
4cos^2 = 1
cos^2 = 1/4
so cos =1/2 and therefore 60 degree angles in quadrant I and IV

I don't know if this is right, it has been over a year since I took this class.

May 5 2009 9:55PM
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InkShrink
Posts: 1079 - Karma: 30
I'm so glad my major doesn't involve math
May 5 2009 9:59PM
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Jordan
Posts: 4079 - Karma: 2,122
That appears to be correct? That's what I would of done.
May 5 2009 10:03PM
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Slinger1x1
Posts: 8853 - Karma: 65
ok, well

3cos(2)t=1-cos(2)t

4cos(2)t=1
cos(2)t=1/4
cost=+/-1/2
reference angle = 60
t= pie/3, 2pie/3, 4pie/3, 5pie/3

i think i litterally just did that question for homework
May 5 2009 10:12PM
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Slinger1x1
Posts: 8853 - Karma: 65
you guys didnt solve it correctly

when you go from cos^2t=1/4 and square root it, you get +/-1/2 which is HUGE. dont miss it
May 5 2009 10:14PM
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freshlyDIPPED
Posts: 1160 - Karma: 121
fuck trig
May 5 2009 10:26PM
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Slinger1x1
Posts: 8853 - Karma: 65
no no, fuck geometry proofs. worst time of my life. i have a 4.0 in math, i got a 1.5 when we did geometry proofs...
May 5 2009 10:27PM
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Enjoi.
Posts: 297 - Karma: 9
LOL im at weighted means right now i'm gonna have to deal with trig next year FUUUUUU-
May 5 2009 10:30PM
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Jordan
Posts: 4079 - Karma: 2,122
Geometric haha.
May 5 2009 10:31PM
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Pocahontas
Posts: 64 - Karma: 29
sucks
May 5 2009 10:39PM
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Mac.
Posts: 953 - Karma: 24
Mehh I am in statistics mode where everything I think of is in terms of probability.

SO glad I got that AP exam over with today.
May 5 2009 11:38PM
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