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Mathematical statistics：
Enter the data to be counted, separated by commas (","), and click Next to get the statistics results.
Statistical items: total data, sum, average, variance and standard deviation.
Note: Statistical data can only be numbers, which cannot be algebraic expressions or mathematical functions (including trigonometric functions).
Enter the data to be counted, separated by commas (","), and click Next to get the statistics results.
Statistical items: total data, sum, average, variance and standard deviation.
Note: Statistical data can only be numbers, which cannot be algebraic expressions or mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Statistics > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation 3.4 = ((2×10×sin（x+20）×sin(x-20))÷(19×(1-cos(x-20))) ) .
Question type: Equation
Solution:
The solution of the equation:
x1≈1.461017 , keep 6 decimal places
x2≈-17.388539 , keep 6 decimal places
x3≈-11.105353 , keep 6 decimal places
x4≈-5.132742 , keep 6 decimal places
x5≈-4.822168 , keep 6 decimal places
x6≈7.433629 , keep 6 decimal places
x7≈7.744203 , keep 6 decimal places
x8≈13.716814 , keep 6 decimal places
There are 8 solution(s). *Note: Radian.
解程的详细方法请参阅：《方程的解法》