armanparsi92owhlqz armanparsi92owhlqz
  • 11-09-2019
  • Mathematics
contestada


Solve number 20

traingle ABC with C=90 slove for the missing part

PLEASE HELP!!​

Solve number 20traingle ABC with C90 slove for the missing partPLEASE HELP class=

Respuesta :

jimrgrant1 jimrgrant1
  • 11-09-2019

Answer:

A ≈ 69.5°

Step-by-step explanation:

Given the triangle is right use the cosine ratio to find A

cosA = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{2.7}{7.7}[/tex], thus

A = [tex]cos^{-1}[/tex] ( [tex]\frac{2.7}{7.7}[/tex] ) ≈ 69.5° ( to 1 dec. place )

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