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triangle sides=

a= X

b=10cm

c=10cm

 

Angle a=48 degrees

 

find x

Guest Jan 28, 2018
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 #1
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We can use the Law of Cosines here

 

x^2  =  10^2 + 10^2  - 2(10)(10)cos (48°)

 

x^2  =   200 - 200cos(48°)

 

x = √ [  200 - 200cos(48°) ]   ≈ 8.135

 

 

cool cool cool

CPhill  Jan 29, 2018

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