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CBSE Class 12-science Answered

Prove that 2tan^(-1)(((a-b)/(a+b))^(1/2)tan(c/2))=cos^(-1)((b+a cos c)/(a+b cos c))
Asked by Ankita Patel | 08 May, 2012, 09:05: PM
answered-by-expert Expert Answer
Answered by | 08 Jun, 2012, 05:18: PM

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