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If cos(θ) = 0.5, find cos(−θ).Then, explain how you obtained your answer. a. 0.5, the cos function is even b. −0.5, the cos function is odd c. 2, reciprocal function identity d. 0.5, the cos function is odd e. 0.5, reciprocal function identity

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sqdancefan

Answer:

  a. 0.5, the cos function is even

Step-by-step explanation:

You want cos(-θ), given that cos(θ) = 0.5.

Cosine

The cosine function is symmetrical about the y-axis, characteristic of an even function. This means cos(-θ) = cos(θ) = 0.5, choice A.

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