skylynfloriana skylynfloriana
  • 06-01-2022
  • Mathematics
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21) Find the measure of angle B.

21 Find the measure of angle B class=

Respuesta :

jimrgrant1 jimrgrant1
  • 06-01-2022

Answer:

∠ B ≈ 56.3°

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos B = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{BC}{AB}[/tex] = [tex]\frac{5}{9}[/tex] , then

B = [tex]cos^{-1}[/tex] ([tex]\frac{5}{9}[/tex] ) ≈ 56.3° ( to the nearest tenth of a degree )

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