Question 9 Given that sin(0) = and << what is the exact value of cos(20)?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter1: Introduction To Algebra
Section1.4: Translating Words Into Symbols
Problem 10MRE
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Question 9
Given that
sin(0) = ²/
I
3 and 2
<0
<0<T
what is the exact value of cos(20)?
Transcribed Image Text:Question 9 Given that sin(0) = ²/ I 3 and 2 <0 <0<T what is the exact value of cos(20)?
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