goeringwilliam4257 goeringwilliam4257

24-03-2018
Mathematics

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The base of an isosceles triangle is 21 centimeters long. the altitude to the base is 9 centimeters long. what is the approximate measure of a base angle of the triangle?

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wolf1728 wolf1728

24-03-2018

tangent Angle A = 9 / 10.5
tangent Angle A = 0.8571428571
arc tangent (0.8571428571) =
40.601 Degrees

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