Give the degree measure of $θ$ if it exists. Do not use a calculator.
$θ = \cos^{- 1} (2)$
Select the correct choice below and fill in any answer boxes in your choice.
A. $θ = 7^{\circ}$ (Type your answer in degrees.)
B. $\cos^{- 1} (2)$ does not exist.

Answer

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Answer

So, the final answer is $\cos^{- 1} (2) does not exist$

Steps

Step 1 ：Given that $θ = \cos^{- 1} (2)$

Step 2 ：The cosine function returns values between -1 and 1 for all real numbers.

Step 3 ：Therefore, $\cos^{- 1} (2)$ does not exist because 2 is outside the range of the cosine function.

Step 4 ：So, the final answer is $\cos^{- 1} (2) does not exist$