Determine the approximate value of e.
6.8 cm
7.3 cm
7.8 cm
8.9 cm

Answer:
D) 8.9
Step-by-step explanation:
e^2=b^2+t^2-2btcos(e)
e^2=5^2+6^2-2x5x6xcos(108)
e^2=79.54
square root of 79.54 is 8.9
e=8.9