APPENDIXA
Solutions to âYouâve Got Problemsâ
All the answers to the problems that you found in the âYouâve Got Problemsâ sidebars throughout the book are listed here, organized by chapter.
Chapter 1
1. Using the relationship that 180° corresponds to Ï radians, set up the proportion 
to arrive at 
.
2. You know that sin(2A) = 2sin(A)cos(A). Use the Pythagorean identity sin2(A) + cos2(A) = 1 to solve for the value of 
becomes so and ...
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