Respuesta:
Explicación paso a paso:
E= (sen 20° + cos 70°) sec70°
(sen 20° + cos 70°) (1/cos70°
(sen 20° + cos 70°) = sen 20° + cos 70° = sen 20° + cos 70°
cos 70° cos 70° cos70° sen 20° cos70°
se simplifican 1 + 1 = 2
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Respuesta:
Explicación paso a paso:
E= (sen 20° + cos 70°) sec70°
(sen 20° + cos 70°) (1/cos70°
(sen 20° + cos 70°) = sen 20° + cos 70° = sen 20° + cos 70°
cos 70° cos 70° cos70° sen 20° cos70°
se simplifican 1 + 1 = 2