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tany=0,1+0,2
tany=0,3
de la propiedad;
sec²y=1+tan²y
sec²x=1+tan²x
Q=1+tan²x+1+tan²y
Q=2+tan²x+tan²y
Q=2+(0,2)²+(0,3)²
Q=2+0,04+0,09
Q=2,13