$\text { Evaluate the expression arccos } \left( \frac { \sqrt { 2 } } { 2 } \right) \text { without using a calculator. }$

question 99

Multiple Choice

$\text { Evaluate the expression arccos } \left( \frac { \sqrt { 2 } } { 2 } \right) \text { without using a calculator. }$

• A) \(\frac { 5 \pi } { 4 }\)
• B) \(\frac { \pi } { 6 }\)
• C) \(\frac { 3 \pi } { 2 }\)
• D) \(\frac { \pi } { 4 }\)
• E) \(\frac { 2 \pi } { 3 }\)

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