7. Simplify: secx cotx = 1, cos cos sin = CSC

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter1: The Six Trigonometric Functions
Section1.5: More On Identities
Problem 97PS
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Common Trig Mistakes: Version 1
Each of the following has at least one common trig mistake. Please find the mistake(s) and show the
correct way to work the problem.
7. Simplify: secx cotx=1 = CSC
1 cos
cos sin
8. Evaluate: tan-¹=
9. sin(x+y)-sin x +sin y
10. sin²x = 1-cos²x → √sin²x = √I-Vcos²x = sinx = 1- cos x
Transcribed Image Text:Common Trig Mistakes: Version 1 Each of the following has at least one common trig mistake. Please find the mistake(s) and show the correct way to work the problem. 7. Simplify: secx cotx=1 = CSC 1 cos cos sin 8. Evaluate: tan-¹= 9. sin(x+y)-sin x +sin y 10. sin²x = 1-cos²x → √sin²x = √I-Vcos²x = sinx = 1- cos x
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