Answer:
3.61 in. to the nearest hundredth.
Step-by-step explanation:
You use the Cosine Rule to solve this.
a^2 = b^2 + c^2 - 2bc cos 60 where a is the third side.
Plugging in the given values:_
a^2 = 3^2 + 4^2 - 2*3*4* cos 60
= 9 + 16 - 24*0.5
= 13
a = √13
= 3.61
