Question

Use a calculator to solve the equation on the interval $0 \leq \theta < 2\pi$. $\cos \theta = -0.64$ What are the solutions in the interval $0 \leq \theta < 2\pi$? Select the correct choice and fill in any answer boxes in your choice below. A. The solution set is { }. (Type your answer in radians. Round to two decimal places as needed. Use a comma to separate answers as needed.) B. There is no solution.

          Use a calculator to solve the equation on the interval $0 \leq \theta < 2\pi$.
$\cos \theta = -0.64$
What are the solutions in the interval $0 \leq \theta < 2\pi$? Select the correct choice and fill in any answer boxes in your choice below.
A. The solution set is {  }.
(Type your answer in radians. Round to two decimal places as needed. Use a comma to separate answers as needed.)
B. There is no solution.
        
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Use a calculator to solve the equation on the interval 0 ≤θ < 2π.
cosθ = -0.64
What are the solutions in the interval 0 ≤θ < 2π? Select the correct choice and fill in any answer boxes in your choice below.
A. The solution set is   .
(Type your answer in radians. Round to two decimal places as needed. Use a comma to separate answers as needed.)
B. There is no solution.

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Precalculus with Limits
Precalculus with Limits
Ron Larson 2nd Edition
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Use a calculator to solve the equation on the interval 0<= heta <2pi . cos heta =-0.64 What are the solutions in the interval 0<= heta <2pi ? Select the correct choice and fill in any answer boxes in your choice below. A. The solution set is . (Type your answer in radians. Round to two decimal places as needed. Use a comma to separate answers as needed.) B. There is no solution. Use a calculator to solve the equation on the interval 0<2t cos0=-0.64 What are the solutions in the interval O<2? Select the correct choice and fill in any answer boxes in your choice below. OA.The solution set is (Type your answer in radians. Round to two decimal places as needed. Use a comma to separate answers as needed.) O B.There is no solution.
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Transcript

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00:01 Here we're asked to solve for cosine squared theta is equal to one and zero is less than equal to theta is less than equal to two pi.
00:13 Well when you take the square root of both sides, four times cosine squared theta and the square root of one and then square root of four is two and then square root of cosine squared theta is cosine theta and when you take the square root we want to make sure that we look at the positive and negative so we get positive and negative one that means that cosine of theta is equal to positive or negative one half...
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