Algebra/ trig help please?
For a particular angle theta, the cosine function has the following values within one cycle: cos(0) = 3, cos(π/4) = 0, cos(π/2) = -3, cos(3π/4) = 0, and cos(π) = 3. What is the rule for the cosine function?
The options are: 1. Y = (1/3) cos(2θ) 2. Y = 2 cos(3θ) 3. Y = 3 cos(θ/2) 4. Y = 3 cos(2θ)
Please explain how to arrive at the answer, as I am having difficulty understanding this concept. Thank you for any help! 😊
1 Answers
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