Trigonometric equations
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What is the cosine of 45 degrees?
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sqrt(2)/2
1/2
sqrt(3)/2
None of the above
The cosine of 315 degrees is positive
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True or false
True
False
What is the cosine of 315 degrees?
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sqrt(2)/2
1/2
sqrt(3)/2
sqrt(2)/2
What was my first step in solving the equation in example 1?
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Subtract 1 from both sides
Divide both sides by 2
Add one to both sides
None of the above
What are two values of x that satisfy tanx=sqrt(3)
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60 and 120
60 and 240
300 and 120
None of the above
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