Two rods of lengths L and L (where L < L) are attached at one end with a pivot. L has its other end fixed to the ground and is always held vertical. L has its other end resting on the ground, but is not fixed. The angle between the two is . A LI al L2 2 The two rods have coefficients of linear expansion and a respectively. Both have their temperature changed by the same amount AT. If the initial angle before the temperature change ;=20.5, and the coefficients are a=5.010-5 and a2=3.0x10-5, what is the change in angle between the two rods after the change in temperature of 8.8K? Answer in arcseconds. Note that 3600 arcseconds = 1 degree.