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Unformatted text preview: Additional problems: For problem 17 use the sum identities to expand the expression and then use the special values to simplify. 1. sin(x + π ) 2. cos(x  π /2) 3. sin( π /2  x) 4. cos(x + 3 π ) 5. sin(x  3 π ) 6. cos(x + 2 π ) 7. sin(x + 2 π ) 8. Write sin(3x 5) in terms of sin(3x) and cos(3x). 9. Write cos(3x 5) in terms of sin(3x) and cos(3x). 10. Write cos(2x) in terms of sin(x). 11. Show that sin(x + π /2) = cos(x) using the sum identities. What does does this mean in terms of graphs? How does the graph of sin(x + π /2) compare with sin(x). 12. In number 3 above if x is an angle in a right triangle what does π /2  x represent?...
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This note was uploaded on 10/18/2011 for the course MAC 1114 taught by Professor Russel during the Fall '08 term at Valencia.
 Fall '08
 RUSSEL
 Trigonometry, Addition

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