Oblicz :
[sin^2(60)+cos^2(30)]/[sin(45) *cos(45)] =
=[(V3/2)^2 +(V3/2)^2]/(V2/2 * V2/2) =
=(3/4 +3/4)/2/4 =6/4:2/4 =3
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[sin^2(60)+cos^2(30)]/[sin(45) *cos(45)] =
=[(V3/2)^2 +(V3/2)^2]/(V2/2 * V2/2) =
=(3/4 +3/4)/2/4 =6/4:2/4 =3