Answer:
t=√
−1
16
h+
25
16
Step-by-step explanation:

1. Find Angle A :
Angle A :
2. Find Angle B :
Angle B :
Find Angle C :
Angle C :
Find Angle D :
Angle D :
And it's given :
Therefore, the answer will be " BAHE "
The distance across the lake, a is 611 yards
<h3>Right angle triangle:</h3>
Right angle triangle have one of its angles as 90 degrees. Therefore, the side a can be found using trigonometric ratios,
Therefore,
tan 47° = opposite / adjacent
tan 47° = a / 570
cross multiply
a = 570 tan 47°
a = 570 × 1.07236871002
a = 611.250164714
a = 611 yards
learn more on right triangle here: brainly.com/question/18450490
List A
4+4y=8y
4 (y-1)= 4
4y+1=5y
List B
4y-4=y
4 (y+1)=5y
1+4y=5y