Answer:
I think A
Step-by-step explanation:
Answer:
Angle = 35°
Step-by-step explanation:
<em>The figure would form a triangle and the tree will divide it into two 90 degree triangles.</em>
<em>Height of the triangles will be 8 feet which is opposite to the angle you have to find.</em>
<em>Hypotenuse of both 90 degree triangles will be 14 feet.</em>
<u><em>To find the angle, use the sin formula</em></u>
sin (angle) = opposite/hypotenuse
angle = ?
opposite = 8
hypotenuse = 14
sin (angle) = 8/14
angle = sin inverse (0.57)
angle = 34.8° rounded off to 35°
The angle will be the same for both triangles.
Therefore, the acute angle each triangle makes with the ground is 35°.
There are multiple ways to do this.
The easiest is to just continuously subtract 7 from 65 the numbers of times needed.
But most math teachers will have you use the equation ar^n-1 where a= the first term (65), r=ratio (-7), and n=the term you need (second, fifth, and ninth).
So to solve you just plug your values in as so
AR^n-1
(65)(-7)^2-1(65)(-7)^5-1
(65)(-7)^9-1
B
Because 2 sqrt5 is = to sqrt 20.
4^2=16, 6^2=36
The answer is D. 15, 36, 39.
