Use a calculator to find the value of the following expression rounded to two decimal places.
\[
\cos ^{-1} \frac{1}{4}
\]
$\cos ^{-1} \frac{1}{4}=\square$ radian(s)
(Type your answer in radians. Round to the nearest hundredth as needed.)
Answer
Final Answer: The value of the expression \(\cos ^{-1} \frac{1}{4}\) rounded to two decimal places is \(\boxed{1.32}\) radians.
Step 1 ：The question is asking for the inverse cosine of 1/4, rounded to two decimal places. The inverse cosine function, also known as arccos, is the inverse function of cosine. It returns the angle whose cosine is a given number.
Step 2 ：Calculate the inverse cosine of 1/4.
Step 3 ：The result will be in radians, as required by the question.
Step 4 ：The value of the expression \(\cos ^{-1} \frac{1}{4}\) is approximately 1.32.
Step 5 ：Final Answer: The value of the expression \(\cos ^{-1} \frac{1}{4}\) rounded to two decimal places is \(\boxed{1.32}\) radians.
