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.
Solve sqrt(2)cos x - 1 = 0 on [0, 2pi). (Ans: pi/4 and 7pi/4.)
Solve sqrt(2)cos x - 1 = 0 on [0, 2pi). (Ans: pi/4 and 7pi/4.)
Natural Language
Math Input
Extended Keyboard