I was reading this and I could not figure out why in degrees.
Could anyone explain this to me?
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Did you consider
Let and be the regular trigonometric functions, and let and be functions that return the sine and cosine, respectively, of the angle of x degrees. That is, and . For example, , as expected.
Then, according to the chain rule, .
Oh my goodness that makes so much sense. Thank you emakarov.
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