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Question by  kfelicetti (235)

How do I find sine, cosine, and tangent without a calculator?

 
+6

Answer by  esteban (1334)

Sine is the opposite side divided by the hypotenuse. Cosine is the adjacent side divided by the hypotenuse. Tangent is the opposite side divided by the adjacent side.

 
+5

Answer by  cubedbee (155)

Draw a right triangle with the angle you want in one corner, calculate all lengths of the sides. Sine = opposite/hypotenuse. Cosine = adjacent/hypotenuse. Tangent = opposite/adjacent

 
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