In the diagram above, XY = 8cm and OX = 5cm. Find Oz
hyp = 5cm, adj = 8 cm2\frac{8\,\mathrm{cm}}{2}28cm 4cm, opp = xcm
Pythagoras theorem:
hyp2^22 = opp2^22 + adj2^22
52^22 = x2^22 + 42^22
x2^22 = 25 - 16
x = √9
x = 3cm
