Question: Given that f(x) = cos x, show that f(x + h) f(x) h = COS X cos h h 1 ) sin x sin h

Given that f(x) = cos x, show thatf(x + h) f(x) h = COS X cos h h 1

f(x + h) f(x) h = COS X cos h h 1 ) sin x sin h h

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