Answer: .05
Step-by-step explanation: 3.60 divided by 12: 0.3
5.00 divided by 20: 0.25
0.3-0.25=0.05
2=2
63= 3* 3* 7
14= 2*7
LCM (2,63,14)= 2*3*3*7= 126
The least common multiple (LCM) of 2, 63, and 14 is 126~
Use law of cosine: 16²=17²+12²-2*17*12cosY
408cosY=17²+12²-16²=177
cosY=177/408
use your calculator to find Y: Y≈64