In the given diagram ` theta` is …………

Explanation

Using Lami's theorem
`(T)/(sin (180-theta)) = (T )/(sin (180-theta)) = (mg)/(sin 2theta)`
[Since sin (180- `theta`) = sin `theta , sin 2 theta = 2 sin theta cos theta`]

`(T)/(sin theta) = (mg))/( sin 2theta)`
`T= (50)/(2 cos 30^(@))`
`T=28.86 N`