The proportion 4/7.21 and 2/3.61 proves that the Cos∠A = Cos∠D if the triangle BAC was dilated from triangle BOE at a scale factor of 2
What is a right-angle triangle?
It is defined as a triangle in which one angle is 90 degrees and the other two angles are acute angles. In a right-angled triangle, the name of the sides is the hypotenuse, perpendicular, and base.
Triangle BAC was dilated from triangle BOE at a scale factor of 2
It means if the length of BD = 2 units then
Length of the AB = 2BD = 2(2) = 4 units
We know the cos is the ratio of the adjacent to the hypotenuse.
Cos∠A = AB/AC = 4/7.21
Cos∠D = BD/DE = 2/3.61
Cos∠A = Cos∠D
[tex]\frac{4}{7.21} = \frac{2}{3.61}[/tex]
0.55 = 0.55
Thus, the proportion 4/7.21 and 2/3.61 proves that the Cos∠A = Cos∠D if the triangle BAC was dilated from triangle BOE at a scale factor of 2
Learn more about the right angle triangle here:
brainly.com/question/3770177
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