ytm7mdxd ytm7mdxd
  • 21-04-2024
  • Mathematics
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Please solve it and explain step by step

Please solve it and explain step by step class=

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Itz5151
Itz5151 Itz5151
  • 21-04-2024

Step-by-step explanation:

m<ABD = m<ABC +m<CBD (Clearly)

m<ABC = 2x

m<ABD = 120°

m<CBD = 5x-6

So

  • 2x+5x-6 = 120°
  • 7x-6 = 120
  • 7x = 126
  • x = 18°

So m<ABC = 18*2 = 36°

m<CBD = 5*18 - 6 = 90-6 = 84°

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