Use a Calculator to Find the Value of the Expression $\cos ^ { - 1 } \left( - \frac { 4 } { 5 } \right)$

question 230

Multiple Choice

Use a calculator to find the value of the expression rounded to two decimal places.
- $\cos ^ { - 1 } \left( - \frac { 4 } { 5 } \right)$

• A) -0.93
• B) 143.13
• C) 2.50
• D) -53.13

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Definitions:

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