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True or False: The least numerical value, either positive or negative of angle $\theta$ is called principal value of the inverse trigonometric function.

$\begin{array}{1 1} True \\ False \end{array} $

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The answer is true
This is the definition of principal value of inverse trignometric function.


answered Feb 18, 2013 by thanvigandhi_1
edited Mar 10, 2013 by rvidyagovindarajan_1
Isn't it necessary that the angle belongs to the principal range?
Since the principal value is least numerical value whether positive or negative, the angle will remain in principal range only. i.e.,  the principal range is automatically taken care.

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