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Multple Angle Formulas
The Multiple Angle Formulas for Trigonometry
8
Mathematics
Undergraduate 1
11/16/2011
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Term
sin2x
 Definition
2sinxcosx
Term
cos2x
 Definition

cos2x - sin2x

cos2x - 1

1 - 2sin2x
Term
tan2x
 Definition

2tanx

-------

1-tan2x
Term

sin x/2

 

 

 Definition

+- √1-cosx

-----------

2
Term
cosx/2
 Definition

+-√1+cosx

---------

2
Term
tanx/2
 Definition

1-cosx

--------

sinx

==

sinx

--------

1+cosx
Term
sin2x
 Definition

1-cos2x

---------

2
Term
cos2x
 Definition

1+cos2x

----------

2
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