Posted by **Steve** on Thursday, December 17, 2009 at 9:31pm.

Find all solutions of the equation:

2 cosx + sqrt2 = 0

A) x = ð/4 + 2nð or x = 7ð/4 + 2nð

B) x = 3ð/4 + 2nð or x = 5ð/4 + 2nð

C) x = ð/4 + nð or x = 7ð/4 + nð

D) x = 3ð/4 + nð or x = 5ð/4 + nð

- trig -
**bob**, Thursday, April 24, 2014 at 7:22pm
this is in 3 grade?

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