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sin(A)= opp./hyp.

cos(A)= adj./hyp.

tan(A)= opp./adj.

sin(A)= opp ÷ hyp

cos(A)= adj ÷ hyp

tan(A)= opp ÷ adj

For a diagram of what the sides of a right triangle are, go to http://upload.wikimedia.org/wikipedia/commons/4/4f/TrigonometryTriangle.svg.

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Q: What are the trigonometry functions?
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