Basic Trigonometry Curves & Degree /
Radian Measure
A Degree
measure equals 1/360 of a Circle
since a Circle contains 360 Degrees.
A Radian measure
equals the ratio (180/Pi): approximately 57.2958 degrees.
Pi ( Π
) is a Constant which equals the ratio
(C/D): Circle Circumference
to the Radius.
Basic Relationships: Pi = 1800 2Pi = 3600 C=2 Pi x R or C
= Pi x D
The Six Basic Curves of Trigonometry represent the movement of a Right
Triangle about a Circle.
Sin A = O/H Cos A = A/H Tan
A = O/A
Csc A = H/O or 1/Sin A Sec A =
H/A or 1/Cos A Cot A = A/O or 1/Tan A
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Images from Free OnLine Graphing Calculator
(GraphCalc) http://www.graphcalc.com
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Sin A:
- 2 Π to + 2 Π ( Note: Bumps of Sin = U’s of Csc ) Csc A:
- 2 Π to + 2 Π
Cos A:
- 2 Π to + 2 Π ( Note: Bumps of
Tan A:
- 2 Π to + 2 Π ( Note:
Similarities and Differences ) Cot
A: - 2 Π to
+ 2 Π
Images from Free OnLine Graphing Calculator
(GraphCalc) http://www.graphcalc.com
Tom Love