Matemaatilised valemid 11 klass
Arvväärtused:
a) 30° 45° 60° b) 0°,360°/90°/180°/270°
sin 1/2 ,2/2, 3/2 0/1/0/1
cos 3/2, 2/2, 1/2 1/0/1/0
tan 3/3, 1, 3 0//0/
cot 3, 1, 3/3 /0//0
Põhivalemid: Täisnurkadevalemid:
sin²+cos²=1 sin=cos(90°)
tan=sin/cos cos=sin(90°)
1+tan²=1/cos² tan=cot(90°)
1+cot²=1/sin² cot=tan(90°)
cot=cos/sin
tan*cot=1
Taandamisvalmeid:
a) sin(n*360°+)=sin b) IIv sin(180°)=sin
cos(n*360°+)=cos =cos
tan(n*360°+)=tan =tan
cot(n*360°+)=cot =cot
c)III veerand d)IV veerand e)nega nurk
sin(180°+)=sin sin(360°)=sin sin()=sin
=cos =cos cos()=cos
=tan =tan an()=tan