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Vitek1552 [10]
3 years ago
11

Someone Please Help!!!

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
8 0
Basically, r=2t
A(r)=pir^2
sub 2t for r
A(2t)=pi(2t)^2
A(2t)=4pit²


A. A=4pit²

B. t=5
A=4pi5²
A=4pi25
A=100pi
A=314 square units
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To solve this problem, we can use the tan function to find for the distances covered.

tan θ = o / a

Where,

θ = angle = 90° - angle of depression

o = side opposite to the angle = distance of boat from lighthouse

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When the angle of depression is 16°18', the initial distance from the lighthouse is:

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Step-by-step explanation:

Start by making 2 triangles. One has 68 degrees as the acute angle at the base of the triangle and the other has 41 degrees as the acute angle at the base of the triangle. The side opposite of said angle on both triangles will be 80, the height of the tree. You're solving for the bottom (horizontal) side for both triangles.

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