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Sin, cos and tan

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Sin, cos and tan diagram
This calc simply gives the sine, cosine, and tangent of the input angle, in whatever units are required. squares are also provided.
For angle α

sin α is
cos α is
tan α is
sin² α is
cos² α is
tan² α is
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These functions give values between -1 and +1, and form the basis of much of geometry. The inverse functions (asin, acos, atan) are available in another calc.