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Doesn't make sense

still do not get it

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look is the answer pi/2 +n(pi)(0,+/-1,+/- 2

I tried about everything what is the answer

|dw:1357780533732:dw|

so it is pi/2 + n(pi)

http://www.wolframalpha.com/input/?i=solve+cosx-sinx%3D0

yes one solution is that..

ok thank you i think i get it now

I meant pi/4+2npi

the other is 7pi /4 + 2npi

it should be pi/4 +2npi and 5pi/4 + 2npi

Find all solutions to the equation.
cos x = sin x
is the question they are asking

Well then their answer is wrong!

|dw:1357774360119:dw|

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