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

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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Definitions:

Qing

The last imperial dynasty of China, ruling from 1644 to 1912, known for its significant cultural, social, and political developments.

Ming

Refers to the Ming Dynasty, a ruling dynasty of China from 1368 to 1644 known for its trade expansion and cultural achievements.

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The basic unit of currency in China, also referred to as Renminbi (RMB).

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The distinctive method and approach an artist uses in their paintings, encompassing techniques, brushwork, and choice of subjects.