The halves of the string make 35 degrees with the vertical. What is the tension in the string? What is the tension in the string?
I think the top answer is wrong, the second way gets the correct answer but goes about it in a strange way (the arrow is being pulled back horizontally..?)
Here is my contribution:
The angles below are not correct but hey, a diagram always helps
Each part of the string has a Tension contributing to keeping the forces in equilibrium. Vertically, T cos35 = T cos 35 , which doesn't help.
Solving horizontally: T cos 55 + T cos 55 = 90
2 T cos 55 = 90
T cos 55 = 90 /2 = 45
T = 45 / cos 55
T = 78N