SOLUTION: Please Help Please help me Solve the following equation for x, if 0 ≤ x ≤ 2π √2cosx=-1 Thanks

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Question 750048: Please Help
Please help me
Solve the following equation for x, if 0 ≤ x ≤ 2π
√2cosx=-1

Thanks
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
√2cosx=-1
cosx=-1%2Fsqrt%282%29=-sqrt%282%2F2%29

The principle value is pi%2F4
but our angle is negative so that puts our angle in quadrants II and III, meaning our solutions are

%283pi%29%2F4 or %285pi%29%2F4