Evaluate the Integral $$\int _ { 0 } ^ { \pi } \sqrt { 1 - \cos ^ { 2 } x } d x$$

question 65

Multiple Choice

Evaluate the integral.
- $$\int _ { 0 } ^ { \pi } \sqrt { 1 - \cos ^ { 2 } x } d x$$

• A) \(\sqrt { 2 }\)
• B) 0
• C) 2
• D) \(\frac { \sqrt { 2 } } { 2 }\)

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Graham Wallas

A social psychologist and co-founder of the London School of Economics, known for his work on creativity and the thought process.

Graham Wallas

A British psychologist and educationalist who contributed to the understanding of creative processes and political psychology.

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