sinα=2/4 c=4, b=2
z tw, Pitagorasa obliczamy dl, drugiej przyprostokatnej
4²-2²=a²
16-4=a²
a=√12=2√3
sinβ=2√3/4=√3/2
cosβ=2/4=½
tgβ=sinβ/cosβ=√3/2:½=√3/2·2=√3
ctgβ=cosβ/sinβ=½/√3/2=½·2/√3=2√2√3=√3/3
odp:sinβ=√3/2, cosβ=½, tgβ=√3, ctgβ=√3/3
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sinα=2/4 c=4, b=2
z tw, Pitagorasa obliczamy dl, drugiej przyprostokatnej
4²-2²=a²
16-4=a²
a=√12=2√3
sinβ=2√3/4=√3/2
cosβ=2/4=½
tgβ=sinβ/cosβ=√3/2:½=√3/2·2=√3
ctgβ=cosβ/sinβ=½/√3/2=½·2/√3=2√2√3=√3/3
odp:sinβ=√3/2, cosβ=½, tgβ=√3, ctgβ=√3/3