x +a -)| < 2lsin(",") х — а If 0< lar – al < 8, then Isina-sinal = |2cos(",")sin(,")| х— а |2cos ("

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 57E
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Can you explain why the statement on the red line make sense?

x +a
= |2cos (",")sin(,")|
x - a
x- a
If 0< lx – al < 8, then Isinx- sinal
)< 2lsin (
2
Transcribed Image Text:x +a = |2cos (",")sin(,")| x - a x- a If 0< lx – al < 8, then Isinx- sinal )< 2lsin ( 2
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