SOLUTION: The vertical angle of an isosceles triangle is 72 degree and the base of the triangle is 10cm.Calculate the length of the altitude drawn from the vertex to the base.

Algebra ->  Trigonometry-basics -> SOLUTION: The vertical angle of an isosceles triangle is 72 degree and the base of the triangle is 10cm.Calculate the length of the altitude drawn from the vertex to the base.      Log On


   

Question 882619: The vertical angle of an isosceles triangle is 72 degree and the base of the triangle is 10cm.Calculate the length of the altitude drawn from the vertex to the base.
Answer by lwsshak3(11628) About Me  (Show Source):
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The vertical angle of an isosceles triangle is 72 degree and the base of the triangle is 10cm.Calculate the length of the altitude drawn from the vertex to the base.
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let x=length of altitude
tan36˚=5/x
x=5/tan36˚≈6.9 cm