cikero:

cikero:

I think everyone’s mathematical journey would have been so much easier if they showed you the sine, cosine, and tangent unit circle (R=1) animation in precalc

Below is sine and cosine graph in relation to circle (R undefined)

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Below is tangent graph in relation to circle (R=1)

image

below is all six trigonometric functions on unit circle (R=1)

image

(via theladyem)