2 tan u tan 2u 1 - tan? u

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter1: Line And Angle Relationships
Section1.5: The Format Proof Of A Theorem
Problem 11E: When can a theorem be cited as a reason reason in a proof?
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Prove the following identities as shown.

2 tan u
tan 2u
1 - tan? u
Transcribed Image Text:2 tan u tan 2u 1 - tan? u
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