Mathwords: Half Angle Identities

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Half Angle Identities
Half Number Identities

Trig identities that show how to find the sine, cosine, or tangent of half a given angle.

Half Angle Identities

or

or

or or

See also

Double angle identities

this page updated 15-jul-23
Mathwords: Terms and Formulas from Algebra I to Calculus
written, illustrated, and webmastered by Bruce Simmons
Copyright © 2000 by Bruce Simmons
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