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Mathematics
OpenStudy (anonymous):

I never learned anything about sin of x and my online AFM class assumes i learned that in Algebra 2. Can anyone explain?

OpenStudy (amistre64):

'sin' is a trigonometry function defined as teh opposite side of an angle/ hypotenuse of a rt triangle

OpenStudy (amistre64):

OpenStudy (anonymous):

Moreover, on the trigonometric circle, the sin is read as the y value of the point coordinate, see : http://en.wikipedia.org/wiki/File:Unit_circle.svg

OpenStudy (amistre64):

looks like your using firefox; my links cut short like that in firefox as well

OpenStudy (anonymous):

And, as its derivative cosinus (cos), it is 2Pi Periodic. amistre: Nope, it's chrome : I thinks that OpenStudy that don't digest the ":"

OpenStudy (anonymous):

Furthermore, sin has an inverse function, \[\sin^{-1} x\], that give one of the angle filled into the sin function to get that value. It is multi-valued on the trigonometric circle, but it does not matter on a triangle.

OpenStudy (anonymous):

There is plenty to say about sinus, and in general trig functions : do you need special fact about it ?

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