Can someone answer this problem please Thank You!

-/ 20 ... Question 11 of 12 View Policies Current Attempt in Progress Three equal-length straight rods, of aluminum, Invar, and steel, all at 27.0C, form an equilateral triangle with hinge pins at the vertices. At what temperature will the angle opposite the Invar rod be 59.95? See the table below for needed data. Some Coefficients of Linear Expansion Substance a (10-6/Co) Ice (at 0.C) 51 Lead 29 Aluminum 23 Brass 19 Copper 17 Concrete 12 Steel 11 Glass (ordinary) 9 Glass (Pyrex) 3.2 Diamond 1.2 Invar 0.7 Fused quartz 0.5 Number i Units