- #1
Alfredoz
- 11
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Homework Statement
Hi,
Refer to: http://press.princeton.edu/books/maor/chapter_7.pdf ( Page 2 & 3)
How do we derive the x-coordinate to be (R-r)cosθ + r cos[(R-r)/r]θ
Homework Equations
Let 'r' & 'R' be radius of small & big circles respectively; Let the angle by which a point on the small circle rotates about its center, C be β
The Attempt at a Solution
x-coordinate of point P relative to O = (R-r)cosθ + r cosβ = ?
The text states that the arcs of the fixed & moving circles that come into contact must be of EQUAL LENGTH. May I know how do we prove it mathematically?
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