Trigonometric Functions definition from Circle
mathslogic
2010-09-08
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Trigonometric functions Sine, Cosine, Tangent, Co-tangent, Secant and Co-secant are invented from a circle. That's why Trigonometric functions are also called as Circular functions. This graphical tutorial teaches us, how trigonometric functions are defined from a circle and sides of a right angle triangle.
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