Answer:
I think you replace, A and N with 0.6 and complete the equation
Step-by-step explanation:
srry if wrong but i hope this helped in anyway
<span>On the one hand we know that sin(30) = 1/2. On the other hand we know that sin(A) = a/c. From these two relations we obtain that 1/2 = a/c <=> 1/2 = a/12 <=> a = 12*1/2 <=> a = 6. So the answer is D. 6cm.</span>