CBSE Class 12-science Answered
Find the principal value of ![](http://images.topperlearning.com/topper/questions/189_image010.gif)
![](http://images.topperlearning.com/topper/questions/189_image010.gif)
Asked by Topperlearning User | 21 Apr, 2016, 12:46: PM
For any x [-1, 1], cos-1 x represents an angle in [0, p] whose cosine is x.
therefore = An angle in [0, p] whose cosine is
=
Answered by | 21 Apr, 2016, 14:46: PM
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