100 times every spot to the left is times 10
$39 multiply that by 1/3 OR 39 divide that by 3 . That will get 13 .
39 multiply that by 1/3 OR 39 divide that by 4 . You will get 9.75
Add 13 and 9.75
13+9.75=22.75
Now you subtract 39 - 22.75
You will get 16.25
Answer: The distance between the birds is about 77.78 yards.
This is a trigonometry problems, so it helps to draw a right triangle between the birds. The length between them is the hypotenuse and we have a angle of 40 degrees by the sparrow. The side opposite the sparrow is the difference in heights of the birds, 50 yards.
Therefore, we can write and solve the following sine relationship.
sin(40) = 50/x
0.6428 = 50/x
x = 77.78 <span />
