(i) If a^-> x b^-> = a^-> x c^-> where a^->, b^-> and c^-> are non-zero vectors,then prove that either b^-> = c^-> or a^-> and ( b^-> - c^->) are parallel.

OR

If a^-> and b^-> are two non-zero vectors such that |a^-> x b^->| = a^-> . b^-> , find the angle between a^-> and b^->

Solution

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