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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?

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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1 vote
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?

asked
User GeRyCh
by
8.8k points

1 Answer

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




The base of an isosceles triangle is 21 centimeters long. the altitude to the base-example-1
answered
User BernardG
by
7.6k points
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