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Integrals of Trigonometric Functions
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Derivatives of Trigonometric Functions
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Conversion of Trigonometric Functions
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Law of cosines
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Law of sines
Additional Formulas
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Basic Relationships
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Pythagoras
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Right Triangle
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Shifts and Periodicity
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Symmetry
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Law of cosines
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Law of sines
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Law of tangents
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Product to Sum
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Trigonometry
> Pythagoras
Pythagoras
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Pythagoras is defined as:
a
2
+ b
2
= c
2
which can be rewritten as:
a
2
= c
2
 b
2
b
2
= c
2
 a
2
c
2
= a
2
+ b
2
or c = √(a
2
+ b
2
)
The following functions describe the ratios of the triangle sides.
sin
A
= a/c
cos
A
= b/c
tan
A
= a/b
cot
A
= b/a
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