(tsint i + tcost j) x (( sint + tcost )i + (cost -tsint)j) =-t^2(sin^2 t+ cos^2t)k

Could you please teach me how to get this answer on the RHS? Thank you very much.

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- Feb 5th 2007, 09:25 AMJenny20another cross product
(tsint i + tcost j) x (( sint + tcost )i + (cost -tsint)j) =-t^2(sin^2 t+ cos^2t)k

Could you please teach me how to get this answer on the RHS? Thank you very much. - Feb 5th 2007, 09:40 AMtopsquark