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  • 17-04-2017
  • Mathematics
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find the altitude of an isosceles triangle with a vertex angle of 70° and a base of 246

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Аноним Аноним
  • 17-04-2017
the base angles are both equal to (180-70) / 2 =  55 degrees

and 1/2 base = 123 

so we have tan 55 =  a / 123  where a = altitude
a = 123 * tan55 =  175.66 
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