SOLUTION: Convert the equation 2x-y+2=0 to polar form. then solve the resulting equation for r. i would really appreciate it if you can please help me i would really appreciate thank you.

Algebra ->  Trigonometry-basics -> SOLUTION: Convert the equation 2x-y+2=0 to polar form. then solve the resulting equation for r. i would really appreciate it if you can please help me i would really appreciate thank you.       Log On


   

Question 1129706: Convert the equation 2x-y+2=0 to polar form. then solve the resulting equation for r. i would really appreciate it if you can please help me i would really appreciate thank you.
Found 2 solutions by stanbon, MathLover1:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Convert the equation 2x-y+2=0 to polar form. then solve the resulting equation for r. i would really appreciate it if you can please help me i would really appreciate thank you.
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Conversion from rectangular to polar::
x = r*cos(t)
y = 4sin(t)
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Substitute to get::
2(r*cos(t)) - r*sin(t) = -2
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r = -2/[2cos(t)-sin(t)]
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Cheers,
Stan H.
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Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Convert the equation 2x-y%2B2=0 to polar form:
Substitute:
x=r%2Acos%28theta%29
y=r%2Asin%28theta%29

2r%2Acos%28theta%29-r%2Asin%28theta%29%2B2=0-> polar form

now solve the resulting equation for r

%282cos%28theta%29-sin%28theta%29%29r=-2

r=-2%2F%282cos%28theta%29-sin%28theta%29%29