calculus

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PLEASE write 2x+y=5 in polar form.

a. -sqrt5 = r cos (theta -27degrees)
b. sqrt5 = r cos (theta -27degrees)
c. -sqrt5 = r cos (theta +27degrees)
d. sqrt5 = r cos (theta +27degrees)

is the answer c.

  • calculus -

    my polar equation would be

    2rcosØ + rsinØ = 5
    r(2cosØ + sinØ) = 5
    r = 5/(2cosØ + sinØ)

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