Номер 124.
1)sin135°=√2/2
sin135°=sin(180°-45°)=sin45°=√2/2.
2)cos135°= - √2/2
cos135°= cos( 90 + 45)= - sin 45°= - √2/2
3)tg135°= -1
1tg135⁰=tg(180⁰-45⁰)=-tg45⁰=-1
4)ctg135°= -1
ctg135=ctg(90+45)=-tg45=-1
Номер 124.
1)sin135°=√2/2
sin135°=sin(180°-45°)=sin45°=√2/2.
2)cos135°= - √2/2
cos135°= cos( 90 + 45)= - sin 45°= - √2/2
3)tg135°= -1
1tg135⁰=tg(180⁰-45⁰)=-tg45⁰=-1
4)ctg135°= -1
ctg135=ctg(90+45)=-tg45=-1