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If →a,→b,→c,→d are non-zero vectors satisfying →a=→b+→c,→b×→d=→0 and →c⋅→d=0 , then →d×(→a×→d)|→d|2 is always equal to |
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Answer» If →a,→b,→c,→d are non-zero vectors satisfying →a=→b+→c,→b×→d=→0 and →c⋅→d=0 , then →d×(→a×→d)|→d|2 is always equal to |
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