Question

упростите выражение:

(sin100cos30-cos100sin30)/2sin35cos35

Answer 1

$\dfrac{Sin100^\circ Cos30^\circ-Cos100^\circ Sin30^\circ }{2Sin35^\circ Cos35^\circ}=\dfrac{Sin(100^\circ-30^\circ)}{Sin70^\circ}=\dfrac{Sin70^\circ}{Sin70^\circ}=\boxed1$