j=N (g) Write a formula for 2 Σ j=1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.1: The Law Of Sines
Problem 12E
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So I know the answer is 2N but why is it 2N and not just 2? 

j=N
(g) Write a formula for 2.
j=1
Transcribed Image Text:j=N (g) Write a formula for 2. j=1
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