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Mathematics 11 Online
OpenStudy (anonymous):

cot x (sin x + cos x) = 0

OpenStudy (anonymous):

solve for x?

OpenStudy (anonymous):

yeah

OpenStudy (anonymous):

cos x + cos^2x = 0?

OpenStudy (anonymous):

cot x (sin x + cos x) = 0 Either cotx=0 OR sinx +cosx=0

OpenStudy (anonymous):

Solve that two seperatly

OpenStudy (anonymous):

the answers are pi/2, 3pi/2, 7pi/4, and 3pi/4 ...in the interval [0,2pi)

OpenStudy (anonymous):

cotx=0 x=pi/2 , 3pi/2

OpenStudy (anonymous):

yeah but i dont get what to do with the rest of it

OpenStudy (anonymous):

sinx+cosx=0 sinx=-cosx tanx=-1 x=3pi/4 , 7pi/4

OpenStudy (anonymous):

or wait...

OpenStudy (anonymous):

yeah that's what i figured

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