mack5628 mack5628
  • 01-02-2019
  • Mathematics
contestada


Help. I need to know the length of ac

Help I need to know the length of ac class=

Respuesta :

MrBillDoesMath MrBillDoesMath
  • 01-02-2019

Hello from MrBillDoesMath!

Answer:

2cos(20) is the exact answer  

(1.88 is an approximation)


Discussion:  

From trigonometry

cos(20) = side adjacent angle / hypotenuse

            =  ? / 2

Multiply both sides by 2 to get

2 cos(20) = ? =>

? = 2 (0.9397)    approximately   (done via calculator)

? = 1.88



Thank you,

MrB

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