The triangular section of a large plot must be asphalted. If one side is 240 m
and the depth or altitude of the triangular section is 98 m, what is the area
of the lot?
Using graph paper, construct a drawing like that of the similar triangles for
45° in Figure 6.5. Change the base angle to 30° and use 30, 60, and 90 mm as
the lengths of the bases b = , b ==, and b ===, respectively. Prove by
measurement that the ratios of the sides of the triangle agree with the sine,
cosine, and tangent functions computed on your calculator
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