Description Trig identities 7.1 Assignment Submission For this assignment, you s
ID: 3427956 • Letter: D
Question
Description
Trig identities 7.1
Assignment Submission
For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.
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1.0/1 points | Previous AnswersSPreCalc6 7.1.003.
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My Notes
Write the trigonometric expression in terms of sine and cosine, and then simplify.
4 cos t tan t
2.0/1 points | Previous AnswersSPreCalc6 7.1.004.
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My Notes
Write the trigonometric expression in terms of sine and cosine, and then simplify.
cos t csc t
3.–/1 pointsSPreCalc6 7.1.005.
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My Notes
Write the trigonometric expression in terms of sine and cosine, and then simplify.
sin sec
4.–/1 pointsSPreCalc6 7.1.006.
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My Notes
Write the trigonometric expression in terms of sine and cosine, and then simplify.
cot sec
5.–/1 pointsSPreCalc6 7.1.007.
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My NotesWrite the trigonometric expression in terms of sine and cosine, and then simplify.
sec2x tan2x
6.–/1 pointsSPreCalc6 7.1.008.MI.
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My NotesWrite the trigonometric expression in terms of sine and cosine, and then simplify.
7.–/1 pointsSPreCalc6 7.1.009.
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My NotesWrite the trigonometric expression in terms of sine and cosine, and then simplify.
cos u + tan u sin u
8.–/1 pointsSPreCalc6 7.1.011.
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My NotesWrite the trigonometric expression in terms of sine and cosine, and then simplify.
9.–/1 pointsSPreCalc6 7.1.012.
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My NotesWrite the trigonometric expression in terms of sine and cosine, and then simplify.
10.–/1 pointsSPreCalc6 7.1.010.
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My NotesWrite the trigonometric expression in terms of sine and cosine, and then simplify.
sin2 (1 + cot2)
Total 0/10 (0.0%) k -XX"x-)x-* )#7 *Explanation / Answer
1. 4cos t tan t
tan t= sint/cos t
Therefore
4 cos t * sint/cos t = 4sin t
2. cos t csc t
csc t=1/sin t
Therefore
cos t csc t= cos t *1/sin t=cos t /sin t = cot t
3. sin t sec t
sec t=1/cos t
Therefore
sin t sec t= sin t * 1/cos t= sin t/cos t = tan t
4. cot t sec t
cot t= cos t/sin t and sec t =1/cos t
Therefore
cot t sec t= (cos t/sint)(1/cos t) = 1/sint =csc t