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

[ 1/1 Equation]
    Work: Find the solution of equation 39/sina = 53/（180/11-a） .
    Question type: Equation
    Solution:
    The solution of the equation:
        a₁≈-15.707963 , keep 6 decimal places
        a₂≈-12.566371 , keep 6 decimal places
        a₃≈-9.424778 , keep 6 decimal places
        a₄≈-6.283185 , keep 6 decimal places
        a₅≈-3.141593 , keep 6 decimal places
        a₆≈3.141593 , keep 6 decimal places
        a₇≈6.283185 , keep 6 decimal places
        a₈≈9.424778 , keep 6 decimal places
        a₉≈12.566371 , keep 6 decimal places    
    There are 9 solution(s).    *Note: Radian.

解程的详细方法请参阅：《方程的解法》

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