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Mathematical rose curve needs polar coordinate equation and shape.
Rose line of polar coordinates (polar coordinates? Rose) is a very famous curve in mathematics, which looks like a petal. Can only be described by polar coordinate equation, the equation is as follows:

r(θ)? =? a*cos? kθ? or

r(θ)? =? Answer? Sin? kθ,

If k is an integer, then when k is odd, the curve will be k petals, and when k is even, the curve will be 2k petals. If k is non-integer, a disc-shaped figure will be generated, and the number of petals is also non-integer. Note: this equation cannot produce a multiple of 4 plus 2 petals (for example, 2,6, 10 ...). The variable A represents the length of rose petals. ?

What is the equation? r(θ)? =? 2? Sin? 4θ rose line: