CBSE Class 11-science Answered
Show that A vector . B vector = 1/4 [(A vector + B vector)2 - ( A vector - B vector)2].
Asked by sudhirhanda144 | 22 Apr, 2018, 03:38: PM
Expert Answer
A vector . B vector = 1/4 [(A vector + B vector)^2- ( A vector - B vector)^2].
R.H.S=1/4 [(A vector + B vector)^2- ( A vector - B vector)^2].
Answered by Shiwani Sawant | 25 Apr, 2018, 12:33: PM
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