Show that r(t)=tsin(pi*t)i + tj +tcos(pi*t)k lies on a cone, find the equation for this cone and sketch it.

How should I solve this question? Thank you very much.

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- February 22nd 2007, 12:23 AMJenny20a cone equation
Show that r(t)=tsin(pi*t)i + tj +tcos(pi*t)k lies on a cone, find the equation for this cone and sketch it.

How should I solve this question? Thank you very much. - February 22nd 2007, 04:25 AMCaptainBlack
- February 22nd 2007, 12:05 PMJenny20
thank you !