1.

What is \(\mathop {\lim }\limits_{{\rm{\theta }} \to 0} \frac{{\sqrt {1 - \cos {\rm{\theta }}} }}{{\rm{\theta }}}\) equal to?

A. √2
B. 2√2
C. \(\frac{1}{{\sqrt 2 }}\)
D. \(- \frac{1}{{2\sqrt 2 }}\)
Answer» D. \(- \frac{1}{{2\sqrt 2 }}\)


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