What is the value of cos(5π/6)?
Math III - 7.4 DHQ (3rd) 12/10

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Mathematics
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11th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
-√3/2
2.
FLASHCARD QUESTION
Front
Which angle measure corresponds to the ordered pair (1,0)?
Back
2π
3.
FLASHCARD QUESTION
Front
What is the value of tan(7π/4)?
Back
-1
4.
FLASHCARD QUESTION
Front
Define cosine in terms of a right triangle.
Back
Cosine is the ratio of the length of the adjacent side to the hypotenuse.
5.
FLASHCARD QUESTION
Front
What is the unit circle?
Back
A circle with a radius of 1 centered at the origin of the coordinate plane.
6.
FLASHCARD QUESTION
Front
What is the value of sin(π/2)?
Back
1
7.
FLASHCARD QUESTION
Front
What is the relationship between sine and cosine?
Back
sin(θ) = cos(90° - θ) or sin(θ) = cos(π/2 - θ) in radians.
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