What should be the angles of the triangle formed by the A frames in a 10ft x 6ft wooden swing frame?

Question:I'm talking about the two A frames that hold a swing up. The swing will have two to three swings and it has to be children-safe. Should I use equilateral triangles with 60 degree in all corners?

Answers:
The wide the base of the A's are apart, the more sturdy it will be, the angles of your legs need to be equal, in relation to the ground, then whatever those 2 are added together subtracted from 180 is the need degree at the peak of the A.

example, 2 75 degree angles on the bottom,

(75+75) - 180 = 30 degrees at the top
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