Suppose a triangle has two sides of length 2 and 3 and that the angle between these two sides is 60°. What is the length of the
third side of the triangle?
A. /3
B. /7
C. 2 /3
D. 2
2 answers:
Answer:

Step-by-step explanation:
Given that a triangle has two sides of length 2 and 3 and that the angle between these two sides is 60°.
Let b=2 units and c=3 units
we have to find the length of the third side of the triangle.
By law of cosines

where A is the angle between the side b and c



Length cannot be negative
∴ 
Option B is correct.
There is a photo with equations and the answer.
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