3 years ago

Eliminate the parameter. x = 5 cos t, y = 5 sin t .

1 answer:

7 0

Hello,
x=5 cos t and y=5 sin t are the parametric equations of the circle of center (0,0) with radius=5

x²=25*cos²t
y²=25*sin²t
x²+y²=25(cos²t+sin²t)
==>x²+y²=25

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