Find the length of side AB.
Give your answer to 1 decimal place.

Answer:
AB = 5.6 cm
Step-by-step explanation:
Reference angle = 62°
Adjacent = AB
Hypotenuse = 12 cm
Applying trigonometric ratio,
Cos 62 = adj/hyp
Cos 62 = AB/12
12*Cos 62 = AB
AB = 5.6 cm (1 d.p)