Use a Reference Triangle in an Appropriate Quadrant to Find $$\cos ^ { - 1 } \frac { \sqrt { 3 } } { 2 }$$

question 503

Multiple Choice

Use a reference triangle in an appropriate quadrant to find the angle.
- $$\cos ^ { - 1 } \frac { \sqrt { 3 } } { 2 }$$

• A) \(\frac { \pi } { 4 }\)
• B) \(\frac { 7 \pi } { 4 }\)
• C) \(\frac { \pi } { 6 }\)
• D) \(\frac { 11 \pi } { 6 }\)

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