Convert r^2cos(2theta)=1 to Cartesian

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Convert polar to Cartesian (rectangular),
r^2*cos(2theta) = 1, x^2-y^2=1,
Convert polar to cartesian, hyperbola

S. Chow
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Oh my gosh, I was struggling so hard with this problem on my hw, and as a hail mary, I just googled the equation, not thinking it would go anywhere cause it's such a specific problem. But here I am! Thank you so much!!!

andyspendlove
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Thanks so much, I never took trig and was utterly baffled by this problem in my Calc 2 class.

bornforburning
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Thank you. I'm very fortunate to have so many people doing math on youtube.

garthenar
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I was so close, but I just needed a little push in the right direction. Thank you for this! Definitely helped me out a ton :)

selabunny
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THANKYOU this is just what I needed to know, my trigonometry/precalculus teacher is just awful and didn't get anywhere close to teaching us this and our last test is on Monday and she also assigned us 150 pretty pointless questions online because she's too lazy to give us real and helpful homework

gracehu
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I'm doing a problem similar to this, and I completely forgot about the double angle identity. Thank you!!!

vincentgriffin
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How to calculate the rectangular form of that equation sir? Thanks...

ShakeJunt-hv
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Thank youuuu (TuT)
saludos desde México💜

amoelchocolateyanime
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My savior, My hero, My god. T.T thank you chow-sama

Toucanyou
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do you have any videos on vector projections or really anything to do with vectors

annapeterson
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Just curious, what is with the spherical mic?

josephching
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but how do you know its a hyperbola? how do you know how to begin graphing anything?

pugachan