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September 4, 2015
Posted by **Barbara** on Tuesday, November 29, 2011 at 4:14pm.

- calculus 1a -
**Steve**, Tuesday, November 29, 2011 at 4:52pmdraw a triangle

opposite the angle θ is side 2x

hypotenuse is 1

sinθ = 2x/1

tanθ = 2x/√(1-4x^{2})