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AP Precalculus
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Unit 3: Trigonometric and Polar Functions
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Question
AP Precalculus
easy
mcq
1 pt
cos(π/4) equals
A.
√2/2
B.
1/2
C.
√3/2
D.
1
Explanation
Core Concept
The 45° cosine value.
Correct Answer
A
√2/2
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