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Chapter 4
Section 4.2, Extension of Exercise 75 (page 371)
Use the triangle in Exercise 75 to prove that 
Section 4.3, Extension of Exercise 77 (page 385)
(a) Complete the following table to show that
(in radians) when 
is small.
 |
cos |
 |
| -0.03 | ||
| -0.02 | ||
| -0.01 | ||
| 0 | ||
| 0.01 | ||
| 0.02 | ||
| 0.03 |
(b) For what values of
is the magnitude of the error in approximating cos
by
less than 1% of cos ?
That is, solve the inequality 
Use the graph of 
to solve the inequality.
Section 4.7, Extension of Exercise 66 (page 425)
(f) 