Question: 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

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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