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anonymous

  • one year ago

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°?

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  1. anonymous
    • one year ago
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    okay so what do i do

  2. campbell_st
    • one year ago
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    use trigonometry to find x|dw:1437623905930:dw| I think you need the cosine ratio

  3. anonymous
    • one year ago
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    i dont know what to do ?

  4. anonymous
    • one year ago
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    1.08 m 2.62 m 3.37 m impossible to tell

  5. campbell_st
    • one year ago
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    when you find the value of x, just double it as the perpendicular from the angle to the base bisects the base

  6. anonymous
    • one year ago
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    |dw:1437624049817:dw|

  7. anonymous
    • one year ago
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    so its 2.62

  8. anonymous
    • one year ago
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    |dw:1437624104059:dw|

  9. anonymous
    • one year ago
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    x = 77.5° the base is equal to 2* 2.5 cos(77.5°)

  10. anonymous
    • one year ago
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    4 4√2 8 8√2 these are my options

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