If→A×→B=→C+→D, then select the correct alternative:
Component of →C along →A= - component of →D along →A
According to definition of cross-product →C+→D is perpendicular to both →A and →B
i.e. →A.(→C+→D)=0
or →A.→C+→A.→D=0
or A(component of →C along →A) + A(component of →D along →A) = 0
or component of →C along →A = -component of →D along →A