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Circumference Of The Earth
Lesson 1 Udacity
17
Physics
9th Grade
08/09/2013
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Term
Plato's Guess C.O.E.
 Definition
400,000 stadia
74,000 KM
Term
Plato's Error
 Definition
85% larger
Term
Archimedes' Guess C.O.E.
 Definition
300,000 stadia
55500 KM
Term
Archimedes'Error
 Definition
39% larger
Term
1 Stadium/Stadion
 Definition
185 M
Term
α Alpha
 Definition
Angle #1 in Physics
Term
Congruent
 Definition
Same sides and angles
Term
Similar
 Definition
Same shape, ratios are common
Term
Hypotenuse
 Definition
Longest side on a right triangle
Term
Tangent
 Definition

opp.

adj.
Term
Sign
 Definition

opp.

hyp.
Term
Cosign
 Definition

adj.

hyp.
Term
SOH CAH TOA
 Definition
Sin.Opp.Hyp. Cos.Adj.Hyp. Tan.Opp.Adj.
Term
Trigonometry Tables
 Definition
Tabulated values for some or all of the six trigonometric functions for various angular values.
Term
Eratosthene's Guess C.O.E.
 Definition
250,000 Stadia
46,250 KM
Term
Eratosthene's Error
 Definition
16% Larger
Term
arc-tan/cos/sin
 Definition
inverse of tan/cos/sin
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