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. Sqrt 3
B. Sqrt7
C. 2 Sqrt 3
D. 2

Question

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.	Sqrt 3
 		B.	Sqrt7
 		C.	2 Sqrt 3
 		D.	2

tigerlover · Answer

it doesnt have an image to it. just the question and answer.

tigerlover · Answer

i really need help

mjdennis · Answer

Law of Cosines, I think, is the formula to use.
hyperphysics.phy-astr.gsu.edu/hbase/lcos.html

agent0smith · Answer

Have you learned the law of cosines?

mjdennis · Answer

How polite; I guess "I really need help" means "I'll never answer someone helpful".

agent0smith · Answer

Hyperphysics is awesome btw. One of the few sites I often trust for physics knowledge.