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Unformatted text preview: 5.4 Sum and Difference Identities Quiz on Friday. 4 questions. 2 questions on
identities, and 2 questions on solving trig
equations. Tuesday, September 27, 2011
5:24 AM Agenda:
1. Whiteboard Warmup
2. A word about late work
2. Lesson: 5.4 Sum and Difference Identities
Lets say that for some problem, you found the form for the general solutions to be
. What are the solutions on the interval
Hint. Substitute values of
for n until the output is outside of the interval. ________________________
• I will collect late work, but rather than the one random assignment that I collect for
the week, I will expect to see all assignments for that week done, with each
assignment of quality that would have earned a minimum score of a 4 if it was turned
in on time. Late work will earn a maximum score of 2 out of 4 (70%).
• If you are absent, please turn in the collected assignment on the day you come back.
Lesson: 5.4 Sum and Difference Identities
Goal: Use sum and difference identities to simplify trigonometric expressions
Sum and Difference Identities
Ch_5 Page 1 DOD
Sum and Difference Identities ________________________
Find the exact value.
(use the fact that ) (use the fact that ) Use the sum and difference identities to write the expression as the sine, cosine, or
tangent of an angle. Ch_5 Page 2 Verify the identity Ch_5 Page 3 ...
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