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Is the sine and cosine of a 60 degree angle A in a right triangle always the same?



Here are the “sames'”.

Sin(60 deg) = Cos(30 deg) = 0.866
Sin(30 deg) = Cos(60 deg) = 0.5
Sin(45 deg) = Cos(45 deg) = 0.7071

In general, Sin(x deg) = Cos([90 – x] deg)
For all real x.

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