davisnaziyahovz5sk
25.01.2020 •
Mathematics
What steps would you do to solve n/7 + 3 ≥ -4?
a multiply by seven, then subtract three.
b add three, then multiply by seven.
c subtract three, then multiply by seven.
d subtract three, then divide by seven.
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Ответ:
Option (4). 56.31°
Step-by-step explanation:
From the figure attached,
Distance between the bird and tower (BT) = 6000 feet
Distance between the tower and the observer (OT) = 9000 feet
We have to find the angle of depression (∠TBO)
tanx =
tanx =
tanx = 1.5
x =
x = 56.31°
Angle of depression from the bird to the observer is 56.31°
Option (4) will be the answer.