Problem 11
Question
Use a calculator to approximate the value. Round your answer to two decimal places. \(\arccos (-0.8)\)
Step-by-Step Solution
Verified Answer
The rounded result from the calculator would be the short answer. As this is calculator dependent, the exact short answer can be variable depending upon the calculator.
1Step 1: Identify the Task
The task here is to find the arccos or the inverse cosine of -0.8. This is the angle whose cosine is -0.8.
2Step 2: Use the Calculator
Enter -0.8 in your calculator and then press the 'arccos' or 'inverse cosine' button. Make sure your calculator is set to 'degree' mode.
3Step 3: Round the Result
The calculator will return a result. Round this result to two decimal places.
Other exercises in this chapter
Problem 11
Finding an Indefinite Integral In Exercises \(1-20\) , find the indefinite integral. $$ \int \frac{e^{2 x}}{4+e^{4 x}} d x $$
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Solving an Exponential or Logarithmic Equation In Exercises 1-16, solve for \(x\) accurate to three decimal places. $$ \ln x=2 $$
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In Exercises 9–16, sketch the graph of the function and state its domain. $$ f(x)=\ln 2 x $$
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