The answer is 70.364. Go to Cymath and put in the exact equation above and you’ll get each step in full detail. Hope this helps!
Answer:

Step-by-step explanation:

Firstly, we've to interchange the variables.

Solving for y

Adding 3 to both sides

Multiplying 2 to both sides

Taking cosine on both sides

Dividing both sides by y

Replace y by 
=> 
Answer:
126 units
Step-by-step explanation:
Ed=9 units,Ab= 81 units, Ec=x and AC=140
helli I kaiahaahajkasn
Step-by-step explanation:
helli I kaiahaahajkasn