We need to get the equation in square form
We apply completing the square method
Divide all the terms by 5
Group x terms and y terms separately
By completing the square method, we take half of coefficient of x and square it
square it
Add 1 on both sides
square it
Add 4 on both sides
Add 6 on both sides
Now factor both parenthesis
The equation of the circle is
Answer:
1035.33 feet
Step-by-step explanation:
OBH is a triangle and the sum of the angles of a triangle = 180
∠OBH = 90°
∠OHB = 180 -(49 + 90) = 41°
The law of sines that the ratio of each side of a triangle to the sin of the angle opposite it is the same
Thus
A/sinα = B/sinβ = C/sinγ
where A, B and C are the three sides of the triangle and α, β, γ corresponding respectively to the angles opposite them.
Using the law of sines
Therefore BH which is the height the helicopter is flying at is
≈ 1035.33 feet