Find the exact value of cos−1cos6π7.Write your answer in radians in terms of π.If necessary, click on "Undefined."
Question
Solution 1
The first step is to evaluate cos(6π/7).
The cosine function has a period of 2π, so cos(θ) = cos(θ ± 2nπ) for any integer n. This means we can add or subtract multiples of 2π from the angle and the cosine value will remain the same.
We can use this property to simplify the angle 6π/7.
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Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study problem.
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