expansion of cosx

Super Sandpiper answered on June 2, 2021 Popularity 7/10 Helpfulness 7/10

answer expansion of cosx

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cos(x) = 1 - x^2/2! + x^4/4! - x^6/6! +…….
Trick: even powers since cos(x) is even function

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Contributed on Jun 02 2021

Super Sandpiper

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