1. 12/13
2. 6/10
Step-by-step explanation:
SinC = opposite/hypotenuse
sinC = AB/AC
sinC = 12/13
cosC = adjacent/hypotenuse
cosC = BC/AC
cosC = 6/10 = 3/5
step-by-step explanation:
no solution.
d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two