How to Find Reactions at Point A in a Structural System?

[Ryuk1990]

I am to find the reactions at A. Am I doing this right? Do I also need to find A_x? If I do, would it just be A_x - 400cos30 = 0?

 

[PhanthomJay]

I am to find the reactions at A. Am I doing this right?

Yes, but I couldn't find your calculation for determining x =20 feet

Do I also need to find A_x?

Yes!

If I do, would it just be A_x - 400cos30 = 0?

and Yes again!

 

[Ryuk1990]

Yes, but I couldn't find your calculation for determining x =20 feet

My bad. I used this following equation to find x.

300(20) = 100x + (400sin30)x

Is that the correct way of finding x?

 

[PhanthomJay]

My bad. I used this following equation to find x.

300(20) = 100x + (400sin30)x

Is that the correct way of finding x?

Yes, indeed.