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Can (cos(x) +1)/(2*cos(x/2)) be simplified to cos(x/2)? If so, how? Wolfram alpha returned the simplified answer as cos(x/2).?

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  • Can (cos(x) +1)/(2*cos(x/2)) be simplified to cos(x/2)? If so, how? Wolfram alpha returned the simplified answer as cos(x/2).?


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