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?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 59E
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![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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F93724627-c7b6-406b-9a00-d0dcd2c570ce%2F6319358c-7d40-4055-8ade-aa232ccadcee%2Fnljsold_processed.png&w=3840&q=75)
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.
![cos -
I resulted in a negative answer.
Why is it impossible for cos to be
12
negative?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F93724627-c7b6-406b-9a00-d0dcd2c570ce%2F6319358c-7d40-4055-8ade-aa232ccadcee%2F9hgmg19_processed.png&w=3840&q=75)
Transcribed Image Text:cos -
I resulted in a negative answer.
Why is it impossible for cos to be
12
negative?
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