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April 25, 2014

Homework Help: trig

Posted by Anonymous on Tuesday, May 22, 2012 at 11:27pm.

Find all solutions of cos 2x + √2/2 =0.

a) + or - 3/8pi +Kpi
b) 2/3pi + Kpi, 5/3pi + Kpi
c) + or - 2/5 +Kpi
d) 2/3 pi + 2Kpi, 5/3pi + 2Kpi

I really need help on this question :(

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