tangent of 30 degrees = 1/2 of the square root of 3 = roughly 0.5773
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The six basic functions of trigonometry are the sine, cosine, tangent, cosecant, secant, and cotangent functions. Abbreviated sin, cos, tan, csc, sec, cot.
tan (30 degrees) would be equal to 0.577350269.
angle can be defined as sin-1=O/H, cos-1=/H, or Tan-1=O/A
sin^2 (feta) + cos^2 (feta) = 1 sin (feta) / cos (feta) = tan (feta)
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