CBSE Class 11-science Answered
If cosA = x + 1/x , show that
Asked by | 30 Jul, 2012, 03:35: PM
Expert Answer
Please check your question. Cos A should be given to be equal to 1/2 (x + 1/x)
Similarly, you can find cos3A.
Answered by | 30 Jul, 2012, 03:45: PM
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