Предмет: Математика, автор: snezanalian

ДАМ 40 БАЛЛОВ ПОМОГИТЕ ХОТЯ БЫ 2 РЕШИТЬ ​

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Ответы

Автор ответа: mansur4ik96x67
0

Ответ:

cos(7π/3)= cos(2π+π/3)= cosπ/3=1/2

tg(-4π/3)= -tg(π+π/3) = -tgπ/3= -√3

ctg(29π/2)= ctg(14π+π/2)= ctgπ/2= 0

Автор ответа: YchenikNikola
0
По формулам приведения
sin 315° =sin(360°-45°)= -sin45°= - √2/2
cos(7pi/3)=cos(7*180/3)=cos420=cos60=1/2
tg(-4pi/3)= -tg 4pi/3= -tg(pi+pi/3)=-tg pi/3= -√3
ctg(29pi/2)=ctg(14pi+pi/2)=ctg pi/2=0
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