pre calc.Math

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Please help me any one of these please! Thank You to any one
r=2-6 cos(θ) convert this polar coordinate equation into an equation in rectangular coordinates(x,y)


given (-8,8) convert this point into polar coordinates with 6 >= 0 and 0<=θ<= 2pi

given x^2+ (y-5)^2=25 cover this rectangular coordinate equation in to an equation in polar coordinates (r,θ)

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