cos - I resulted in a negative answer. Why is it impossible for cos to be 12 negative?
cos - I resulted in a negative answer. Why is it impossible for cos to be 12 negative?
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Transcribed Image Text:It is impossible for any trig function to result in a
negative answer.
2 is a positive angle, therefore the cosine of
any positive angle must be positive as well.
is bigger than 7, therefore it has to be a
positive answer.
is in the first quadrant and x values are
12
positive in the first quadrant, therefore cos
12
must be positive.
Transcribed Image Text:cos -
I resulted in a negative answer.
Why is it impossible for cos to be
12
negative?
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