Math Review Chapter 9
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Last updated 3:03 AM on 3/31/25
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9 Terms
1
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what is the distance formula for polar coordinates
d = sqrt(r1ยฒ+r2ยฒ-2r1r2cos(theta2-theta1))
2
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Polar system coordinate definition
A coordinate plane using an angle of rotation from the polar axis and then a distance r at that angle from the pole.
3
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Polar to rectangular
x = rcos(theta) y = rsin(theta)
4
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rectangular to polar
r = sqrt(xยฒ + yยฒ) tan(theta) = y/x
5
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Eccentricities of conics
e = pf/pq
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PF
distance from point to the focus
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PQ
distance from point to the directrix
8
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magnitude
sqrt(aยฒ+bยฒ)
9
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polar form of a complex number
z = r(cos(theta) + isin(theta))
Note 
Flashcards (44)