
Precalculus Trigonometric Equations
Authored by Anthony Clark
Mathematics
11th Grade
CCSS covered

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Choose a good way to start solving this equation
tanx sin2x = 2 tanx
divide tanx from both sides
factor out tanx
subtract 2 tanx from the left and then factor tanx out
cancel sin2x out
Tags
CCSS.HSF.TF.B.7
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Factor 0 = sin2x − sinx
0 = sinx(sinx)
0 = sinx(1 − sinx)
0 = cosx(sinx − 1)
0 = sinx(sinx − 1)
Tags
CCSS.HSF.TF.B.7
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
csc2x = 2 is equivalent to sin2x = ½
True
False
Tags
CCSS.HSF.TF.C.8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve on the Interval [0,2π)
tan(x) + 1 = 0
x = π/4, x = 5π/4
x = π/4, x = 3π/4
x = π/2
x = 3π/4, x = 7π/4
Tags
CCSS.HSF.TF.B.7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which equation shows how you would use the law of sines to find side c?
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
6.
DROPDOWN QUESTION
1 min • 1 pt
Two stakes are holding a small blimp in place. Stake A measures an angle of elevation of 49o and Stake B measures an angle of elevation of 58o. If the string attached to Stake A has a length of 148 feet, what is the length of the string attached to Stake B? (a)
152.7 feet
166.3 feet
157.3 feet
131.7 feet
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
To approximate the length of a marsh, a surveyor walks 425 meters from point A to point B. Then the surveyor turns 65º and walks 300 meters to point C. Approximate the length AC of the marsh.
250 m
615 m
500 m
790 m
Tags
CCSS.HSG.SRT.D.10
CCSS.HSG.SRT.D.11
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