Answer:
87.4m
Step-by-step explanation:
sin(θ) is the ratio of the opposite side to the hypotenuse
opposite side is the height and hypotenuse is the length of the string
100 Sin 60 gives the height from the hand.
100 x sin60 = 100 x 0.866 = 86.6m from the hand.
Since the hand is 0.8m above the ground height is = 86.6 + 0.8 = 87.4m