Three equal-length straight rods, of aluminium, invar, and steel, all

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Three equal-length straight rods, of aluminium, invar, and steel, all at 20ºC, for an equilateral triangle with hinge pins at the vertices. At what temperature will the angle opposite the invar rod he 59.95º? See Appendix I for needed trigonometric formulas.

Three equal-length straight rods, of aluminium, invar, and steel, all at 20ºC, for an equilateral triangle with hinge pins at the vertices. At what temperature will the angle opposite the invar rod he 59.95º? See Appendix I for needed trigonometric formulas.

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