In the diagram above, XY = 8cm and OX = 5cm. Find Oz
A.
9cm
B.
3.4cm
C.
9.1cm
D.
3cm
Correct answer is D
hyp = 5cm, adj = \(\frac{8cm}{2}\) 4cm, opp = xcm
Pythagoras theorem:
hyp\(^2\) = opp\(^2\) + adj\(^2\)
5\(^2\) = x\(^2\) + 4\(^2\)
x\(^2\) = 25 - 16
x = √9
x = 3cm