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anonymous
 one year ago
Alicia draws a diagram to represent two forces, F1 and F2, acting on a body. The angle between the directions of the forces is 50° as shown in the diagram. Alicia notices that she can use the Law of Cosines to find the magnitude of the resultant force R in the diagram. What is the value of R? 120.1 N
78.0 N
70.7 N
38.5 N
45.0 N
anonymous
 one year ago
Alicia draws a diagram to represent two forces, F1 and F2, acting on a body. The angle between the directions of the forces is 50° as shown in the diagram. Alicia notices that she can use the Law of Cosines to find the magnitude of the resultant force R in the diagram. What is the value of R? 120.1 N 78.0 N 70.7 N 38.5 N 45.0 N

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435590682033:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@ms.hi @lex.mcgrew @sweetpeagirl

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@SolomonZelman can you please help

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0not sure how to do this

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Drop vertical line down from B, to same level as A, label this line BD BD = 38 sin(50) = 29.1 CD = 38 cos(50) = 24.4 AD = AC + CD = 40 + 24.4 = 64.4 Pythagoras next AB^2 = BD^2 + AD^2 AB = 70.7N
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