Trigonometry (11th Edition) Clone

Published by Pearson

Chapter 2 - Acute Angles and Right Triangles - Section 2.1 Trigonometric Functions of Acute Angles - 2.1 Exercises - Page 54: 30

Answer

$\sin$ (90 - $A$) = $\cos$ $A$

Work Step by Step

For each value substituted for $A$ the same result is found for $\sin$(90 - $A$) and $\cos$ $A$.

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