A helicopter flies 665 feet above ground. What is the measure of the angle of depression from the helicopter to the girl’s line
of sight? Round to the nearest degree.
23°
25°
65°
67°
23°
25°
65°
67°
2 answers:
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Answer:
18 ft
Step-by-step explanation:
Since the triangle is right angled ; we could use trigonometry ;
Using the angle , 40° ; adjacent side, = 14 feets ; hypotenus = x
Cos θ = Adjacent / hypotenus
Cos 40 = 14 / x
0.7660444 = 14 / x
0.7660444x = 14
x = 14 / 0.7660444
x = 18.27
= 18 ( nearest foot)
Answer:
See proof below
Step-by-step explanation:
We have to verify that if we substitute in the equation
the equality is true.
Let's substitute first in the right hand side:
Now we use the distributive laws. Also, note that (this also works when the power is n-2).
then the sequence solves the recurrence relation.