How Do You Calculate the Tension in Cables Supporting a Suspended Loudspeaker?

[Allura]

Homework Statement

A 26.0 kg loudspeaker is suspended 1.9 m below the ceiling by two 3.0-m long cables that angle outward at equal angles. What is the tension (in N) in the cables? Assume that the local acceleration due to gravity is 9.80 m/s2.

I'm not sure how to approach this problem. I was thinking I would find the angle using cos -1 (1.9/3) and then using the angle to find T1?

 

[iRaid]

mg/2 sin theta = T
What 1 angle = the other =.

Try that

 

[Allura]

Ok so I got 9.8x26kg/2 = 127.4 and do you mean sin-1(127.4)?

 

[iRaid]

You need to find the angle of between the rope and the top of the building or w/e it's suspended on.