Answer: 8.4cm
Explanation:
sin cos tan
SOH CAH TOA
It is cos because CAH does not have opposite (o) in it and we want to find the opposite.
O is opposite (opposite angle)
A is adjacent (next to angle)
H is hypotenuse (opposite right angle)
This is how I remember it
Cos(61)*17.4=8.435
8.4cm