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Does anyone know if a LX70 polar scope can be used in a LXD55 mount? Thanks? If both plates are smooth what is the minimum value for theta?as this is a mcq all the answers are in tan^-1.? What can absorb light in the universe? In Algebra, if an eigenvalue of a matrix A is 3 and 5, what is the eigenvalue of matrix A^(-2)? How to calculate the concentration of the acid?