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AB = 10 cm
AP = 9 cm
OC = 5 cm
PB = 1 cm
obliczam CP:
|CP|² + |OP|² = |CO|²
|CP| = 3 cm , ponieważ wraz z OP i OC tworzą trójkąt pitagorejski o bpkach 3 cm, 4 cm, 5 cm
a)
Obliczam tangens kąta CBA (CBA=α)
tgα = |CP| : |PB|
tgα = 3 : 1 = 3
b)
Obliczam sinus kąta CAB (CAB=β)
obliczam AC:
|AC|² = |CP|² + |AP|²
|AC|² = 3² + 9²
|AC|² = 9 + 27
|AC|² = 36
|AC| = 6 [cm]
sinβ = |CP| : |AC|
sinβ = 3 : 6
sinβ = 1/2