ultimatestate23 ultimatestate23
  • 17-03-2021
  • Mathematics
contestada

Construct isosceles triangle ABC such that AB = AC = 10 cm and CB = 9 cm. Measure and write down the size of angle ABC.

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thebecks
thebecks thebecks
  • 17-03-2021

Answer:

∠ABC = 63.26°

Step-by-step explanation:

cos ∠ABC = (9/2)/10

cos ∠ABC = 0.45

∠ABC = 63.26°

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