Find all EXACT solutions of the equation cos(x) =-√2/2 in the interval [0,2x). If there is more than one answer, enter them in a

Question

Find all EXACT solutions of the equation
cos(x) =-√2/2
in the interval [0,2x). If there is more than one answer, enter them in a list separated by commas. Enter an exact expression; decimal approximations or symbolic trigonometric expressions such as arctan (5) will be marked incorrect.

Kunduz · Accepted Answer

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