Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation (x*x+(x+300)^2)*(1-2*sin(1260.0/180.0*3.1415926/x))-750^2 = 0 .
    Question type: Equation
    Solution:    This equation has no real solution!

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