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to prove:-

Asked by 20th February 2009, 5:13 PM
Answered by Expert
Answer:
Beginning with the ubiquitous triple product identity

Ax(BxC) = B(A.C)-C(A.B) (1)

for vectors in R^3, we immediately have the handy formula for the
cross product of two cross products

(AxB)x(CxD) = B[(CxD).A] - A[(CxD).B]
Answered by Expert 22nd February 2009, 2:32 PM
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