Evaluate csc 210°. de The reference angle is 0' = 210° – 180° = 30°. The cosecant function is negative in Quadrant III, so csc 210° = -csc 30° = -2.

Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter67: Analysis Of Trigonometric Functions
Section: Chapter Questions
Problem 51A
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Evaluate csc 210°.
0lo bob
The reference angle is 0' = 210° – 180° = 30°. The cosecant function is negative in
Quadrant III, so csc 210° = -csc 30° = -2.
Transcribed Image Text:Evaluate csc 210°. 0lo bob The reference angle is 0' = 210° – 180° = 30°. The cosecant function is negative in Quadrant III, so csc 210° = -csc 30° = -2.
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