A boat is heading towards a lighthouse, where Jack is watching from a vertical distance of 108 feet above the water. Jack measures an angle of depression to the boat at point A
A to be 9
∘
∘
. At some later time, Jack takes another measurement and finds the angle of depression to the boat (now at point
B
B) to be 66
∘
∘
. Find the distance from point
A
A to point
B
B. Round your answer to the nearest tenth of a foot if necessary.

7

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

c) yes, because of asa or aas