brokenheart1
brokenheart1 brokenheart1
  • 23-03-2020
  • Mathematics
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PLEASE HELP!! EASY GEOMETRY!!

PLEASE HELP EASY GEOMETRY class=

Respuesta :

Favouredlyf Favouredlyf
  • 23-03-2020

Answer: B

Step-by-step explanation:

We would apply the law of Cosines which is expressed as

a² = b² + c² - 2abCosA

Where a,b and c are the length of each side of the triangle and A is the angle corresponding to a.

62² = 78² + 44² - 2(78 × 44)Cosx

3844 = 6084 + 1936 - 2(3432)Cosx

3844 = 8020 - 6864Cosx

6864Cosx = 8020 - 3844

6864Cosx = 4176

Cosx = 4176/6864

Cosx = 0.608

x = Cos^(- 1)0.608

x = 52.5° to the nearest tenth

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