Question

упростите выражение ctg a / tg a + sin2a + cos2a

Answer 1

Ctg(a/tg(a)) + sin(2*a) + cos(2*a)
((2*cos(a)*sin(a)+2*cos(a)^2-1)*sin(a*cos(a)/sin(a))+cos(a*cos(a)/sin(a)))/sin(a*cos(a)/sin(a))