21. Navigation A boat race runs along a triangular course marked by buoys A, B, and C. The race starts
with the boats headed west for 2500 meters. The
other two sides of the course lie to the north of the
first side, and their lengths are 1100 meters and 2000
meters. Draw a figure that gives a visual representa-
tion of the problem, and find the bearings for the last
two legs of the race.

the correct answer is the second option

is this part of a question or something

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.