ollived07 ollived07
  • 17-02-2020
  • Mathematics
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(SAT Prep) In △ABC, AB = BC = 20, DE ≈ 9.28. Approximate BD.

SAT Prep In ABC AB BC 20 DE 928 Approximate BD class=

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bhuvna789456
bhuvna789456 bhuvna789456
  • 24-02-2020

The measure of BD ≈ 5.36

Step-by-step explanation:

  • The side BC = BD+DE+EC.
  • The measure of BC = 20 and DE ≈ 9.28
  • The angles ∠BD and ∠EC are both equal to 15°
  • If the angles are same, then their sides are equal.

Let 'x' be the measure of BD and EC.

BC = x+9.28+x

20 = 9.28 + 2x

2x = 20-9.28

x = 10.72/2

x = 5.36 (approx.)

∴ The measure of BD ≈ 5.36

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