Find the sign of the following.
-sec (-ϴ), given that ϴ is in the interval (180°, 270°).
A)positive
B)negative

Name: Find the sign of the following. -sec (-ϴ), given that ϴ is in the interval (180°, 270°). A)positive B)negative
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Secant is the reciprocal of cosine. In the interval (180°, 270°), cosine is negative because it corresponds to the third quadrant where both x and y coordinates are negative. Since secant is the reciprocal of cosine, sec(-ϴ) will also be negative in this interval.

Find the Sign of the Following