CBSE Class 9 Answered
PROVE THAT :cos-1(cosA+cosB/1+cosA cosB)=2 tan-1(tanA/2 tanB/2)
Asked by anil685 | 22 Mar, 2012, 09:22: PM
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Answered by | 25 Mar, 2012, 10:14: PM
CBSE 9 - Maths
Asked by anil685 | 22 Mar, 2012, 09:22: PM
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