Posted by **Jeremy** on Saturday, August 15, 2009 at 4:31pm.

Express 5sqrt(3) - 5i in polar form.

A: 10(cos(11pi/6) + i sin(11pi/6))

Express 4(cos(3pi/4) + i sin(3pi/4)) in rectangular form.

A: -2sqrt(2) + 2sqrt(2i

Write 2x+y=5 in polar form.

A: sqrt(5)= r cos (theta-27degrees)

Are these correct?

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