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Mathematics 18 Online
OpenStudy (anonymous):

Fill in the following table for f(x) = cos(x)

OpenStudy (anonymous):

OpenStudy (anonymous):

you just plug the numbers into x and solve, if you having issues with radians then convert to degrees for clarification.

OpenStudy (anonymous):

|dw:1353092613083:dw|

OpenStudy (anonymous):

|dw:1353092670642:dw|

OpenStudy (anonymous):

You want to find the angle on the unit circle, then you want to find the horizontal length of the triangle.

OpenStudy (anonymous):

The circle is radius 1, so the hypotenuse will always be 1.

OpenStudy (anonymous):

Fortunately, all those angles make it easy to calculate cos(x).

OpenStudy (anonymous):

@coolaidd get it?

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