In Example 4, change cos to sin. Data from Example 4 Plot the graph of r =

Question:

In Example 4, change cos to sin.


Data from Example 4

Plot the graph of r = 2cos2θ.
In finding values of r, we must be careful first to multiply the values of θ by 2 before finding the cosine of the angle. Also, for this reason, we take values of θ as multiples of π/12, so as to get enough useful points. The table of values follows:


For values of θ starting with π, the values of θ repeat. We have a four-leaf rose, as shown in Fig. 21.115.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

Question Posted: