From the bridge of a boot on the Niagara River, the angle of elevation of the top of
the Horseshoe Falls is 64. The angle of depression of the bottom of the Falls is 6
If the bridge of the boat is 2.8 m above the water, calculate the height of the
Horseshoe Falls, to the nearest tenth of a metre.

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.

(2,6)

step-by-step explanation:

cause i just did this and got the answer

you're welcome

so the rectangle is 80cm (area)

now to find the area of a triangle.

base times height.

4 times 8.

your answer is 96cm.

hope this .