lalaloopsey
1) Change (8, 23°) into rectangular form.
2) Change (3, 2π) into rectangular form.
3) Change (5, 180°) into rectangular form.
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Hero
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1. Easy
2. Easier
3. Easiest
lalaloopsey
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how about some answers then.
Hero
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Nah, I'm good. Giving answers don't help anyone learn anything.
lalaloopsey
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ok, then get off of my page and never comment again. @Hero
Hero
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Are you threatening me?
lalaloopsey
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good bye.
Hero
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Bye
jim_thompson5910
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(8,23 degrees) = (r, theta)
r = 8
theta = 23 degrees
------------------------------
x = r*cos(theta)
x = 8*cos(23)
x = ???
y = r*sin(theta)
y = 8*sin(23)
y = ???
The answer will be in the form (x,y)
lalaloopsey
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hmm..
jim_thompson5910
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all you have to do is evaluate 8*cos(23) and 8*sin(23) using a calculator
lalaloopsey
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i go -0.5
lalaloopsey
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got*
jim_thompson5910
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for which one, 8*cos(23) or 8*sin(23) ?
ChmE
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DamnImBad
lalaloopsey
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do you know the answers?
ChmE
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Nope, I don't remember how to do this
janessia
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@jim_thompson5910 gae u the fomula all you have to do is finish the problem
Hero
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@lalaloopsey, unblock me.
lalaloopsey
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answer my questions then..
lalaloopsey
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@Hero
Hero
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I'll see what I can do, but unblock me
Hero
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|dw:1354167570002:dw|
r = 8
Hero
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x = 8 cos (23)
y = 8 sin (23)
Hero
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All you have to do now is simply use your calculator. Make sure it's in degree mode. You can use the same method for the others
lalaloopsey
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ok..can you set the other ones up?
Hero
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You use the same exact method on the others. Well, the third one actually doesn't have a vertical component. But you probably already knew that.
lalaloopsey
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no.. i didnt.
shamim
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ok i wanna try 3rd problem
shamim
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here r=5
shamim
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\[here \theta=180\]
Hero
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x = -5
y = 0
shamim
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x=rcos180=5cos180=5(-1)=-5
Hero
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High Schoolers have it so easy
Hero
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This stuff is cake compared to University level
shamim
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and y=rsin180=5sin180=5(0)=0
shamim
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did u get my solution
Hero
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Bro, you didn't need to write all of that. And no, she doesn't get it.
shamim
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ok
shamim
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i need graphical representation to make it clearer
Hero
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There, we helped you with the 1st one and the third one @lalaloopsey . Now do the second one on your own.
shamim
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