Simplifique a expressão E= tg² . x/1 + sec x, com cos x ≠ 0 e cos x ≠ -1.... Pergunta de ideia deMalumtt

Malumtt @Malumtt

December 2019 1 95 Report

Simplifique a expressão E= tg² . x/1 + sec x, com cos x ≠ 0 e cos x ≠ -1.

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albertrieben Boa noite Malu

tg²(x)/(1 + sec(x))

(1 + sec(x))*(1 - sec(x)) = 1 - sec²(x) = 1 - 1/cos²(x) =

1 - 1/cos²(x) = (cos²(x) - 1)/cos²(x) = sen²(x)/cos²(x) = tg²(x)

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tg²(x)/(1 + sec(x)) = 1 - sec(x)

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