Answer:
Q = 9.1º
Step-by-step explanation:
Law of Cosines
c² = a² + b² - 2ab * cosC
1.3² = 7² + 7.6² - 2(7)7.6 * cosQ
1.69 = 106.76 - 106.4 * cosQ
Subtract 106.76 from both sides
-105.07 = -106.4 * cosQ
Divide both sides by -106.4
0.9875 = cosQ
Q = arccos0.9875
Q = 9.068721546032704
Rounded
C = 9.1º
