Simplifying Trig Expressions By Factoring ex 5

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Mathematics
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11th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What substitution is made at the beginning of the problem?
U equals the cosine of X
U equals the tangent of X
U equals the cotangent of X
U equals the sine of X
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the expression rewritten in terms of U?
2U^2 + 3U + 1
2U^2 + U + 3
U^2 + 2U + 3
3U^2 + 2U + 1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which pair of terms multiply to give a positive one in the expression?
Positive one and negative one
Negative one and negative one
Positive one and positive one
Negative one and positive one
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step to obtain the factored form?
Replace U with cotangent of X
Replace U with tangent of X
Replace U with sine of X
Replace U with cosine of X
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final factored form of the expression?
2(cotangent of X)^2 + 3(cotangent of X) + 1
(2U + 1)(U + 1)
(2(cotangent of X) + 1)(cotangent of X + 1)
2U^2 + 3U + 1
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