User:Fath2012

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cosA=adjacent leghypotenuse,sinA=opposite leghypotenuse,tanA=opposite legadjacent leg,secA=hypotenuseadjacent leg,cscA=hypotenuseopposite leg, and cotA=adjacent legopposite leg.

sin30=12,cos30=32,tan30=33,sin45=22,cos45=22,tan45=1,sin60=32,cos60=12, and tan60=3.

<img src="https://latex.artofproblemsolving.com/8/6/5/865494988ab38b5d8adf1df23b29902b8831d48f.png"></img> sin2θ+cos2θ=1,cosθ=cos(θ),sinθ=sin(θ),cosθ=cos(180θ), and sinθ=sin(180θ). Credits to heatherfinotti for these charts