Asked by Anonymous
tan(arccosx)=?
I know the answer is supposed to be sqrt(1-x^2)/2, but how would I go about arriving at that answer? I've searched my textbook and Internet but still haven't got a clue.. Is it simply an identity that I must memorize? Please help
I know the answer is supposed to be sqrt(1-x^2)/2, but how would I go about arriving at that answer? I've searched my textbook and Internet but still haven't got a clue.. Is it simply an identity that I must memorize? Please help
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