如何限制两条锚定线的运动，使它们像钟摆一样连续摆动

I have created two lines anchored to a sprite, which are 30˚ apart. I want both lines to swing left and right like a pendulum, always swinging from end to end (in such a way that they are swinging 45˚ to the left and right of their initial position). Please see the image below of what I am trying to achieve:I have created two lines anchored to a sprite,