Егер y=
функциясының графигі а(2;-6) өтсе k коэффициентінің мәнін табыңыз.
А) 4 В) 1 С) -12 D) -4
217
241
Ответы на вопрос:
Sin(73π/24)*sin(37π/24)*sin(37π/12)=sin(3π+π/24)sin(π+13π/24)sin(3π+π/12)= -sinπ/24*(-sin13π/24)*(-sinπ/12)=-1/2(cos(13π/24-π/24)-cos(13π/24+π/24))* *sinπ/12=-1/2(cosπ/2-cos7π/12)*sinπ/12=1/2cos7π/12*sinπ/12= =1/4(sin(π/12-7π/12)+sin(π/12+7π/12))=1/4(sin(-π/2)+sin2π/3)= =1/4*(-1)+1/4*√3/2=-1/4+√3/8
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