Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(d/dt (-sin(t)cos(t), cos^2(t), sin(t)))dot(-sin(t)cos(t), cos^2(t), sin(t))
(d/dt (-sin(t)cos(t), cos^2(t), sin(t)))dot(-sin(t)cos(t), cos^2(t), sin(t))
Natural Language
Math Input
Extended Keyboard