Question
A carpenter makes a triangular frame by joining three pieces of wood that are 20 cm, 24 cm, and 30 cm long. What is the measure to the nearest degree of the smallest angle in the frame? (Enter only the number.)
Answers
Steve
law of sines: smallest angle opposite smallest side.
That would be between the sides of 24 and 30. The law of cosines tells us that
20^2 = 24^2 + 30^2 - 2(24)(30) cosθ
Now just do the math
That would be between the sides of 24 and 30. The law of cosines tells us that
20^2 = 24^2 + 30^2 - 2(24)(30) cosθ
Now just do the math
someone
What the answer so I can check