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.
if sin(t) = (3)/(8) and t está no segundo quadrante, encontre cos(t)
if sin(t) = (3)/(8) and t está no segundo quadrante, encontre cos(t)
Natural Language
Math Input
Extended Keyboard