Answer the given questions about the indicated examples of this section. In Example 4, if 90 is

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Answer the given questions about the indicated examples of this section.

In Example 4, if 90° is added to each angle, what is the sign of each resulting function?


Data from Example 4

(a) The following are positive:

sin 150° cos 290° tan 190° cot 260° sec 350° csc 100°

(b) The following are negative:

sin 300° cos 150° tan 100° cot 300° sec 200° csc 250°

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Basic Technical Mathematics

ISBN: 9780137529896

12th Edition

Authors: Allyn J. Washington, Richard Evans

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