anonymous
  • anonymous
What is the approximate length of the base of an isosceles triangle if the congruent sides are 2.5 m and the vertex angle is 25°?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
okay so what do i do
campbell_st
  • campbell_st
use trigonometry to find x|dw:1437623905930:dw| I think you need the cosine ratio
anonymous
  • anonymous
i dont know what to do ?

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anonymous
  • anonymous
1.08 m 2.62 m 3.37 m impossible to tell
campbell_st
  • campbell_st
when you find the value of x, just double it as the perpendicular from the angle to the base bisects the base
anonymous
  • anonymous
|dw:1437624049817:dw|
anonymous
  • anonymous
so its 2.62
anonymous
  • anonymous
|dw:1437624104059:dw|
anonymous
  • anonymous
x = 77.5° the base is equal to 2* 2.5 cos(77.5°)
anonymous
  • anonymous
4 4√2 8 8√2 these are my options

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