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Mathematics 11 Online
OpenStudy (explainitlikeimfive):

Solve the equation on the interval [0, 2π).

OpenStudy (explainitlikeimfive):

OpenStudy (explainitlikeimfive):

I think it is B, am I correct?

zepdrix (zepdrix):

Yes! Good job. Here is a graph if you'd like to see what it looks like. I've graphed sec(x/2) and cos(x/2). https://www.desmos.com/calculator/d5mnkcwarf You can see that, within our given interval, they only intersect at x=0.

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