Angelique draws triangle ghk. if angle g=30o, g=3, ang k=4, what is the approximate length of ha. 1.2 or 5.7b. 2.2 or 4.7c. 4.7d. 5.7

To solve this problem we will use the cosine rule. Formula is:

On left side we have side that we want to find length of. On right side we have other two sides and angle opposite to searched side.

We are given:
angle g=30°
g = 3
k = 4

In case of our formula we know x and y, but we do not know z. Now we have:



Now we solve this for z:




Our solution is A.