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Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation -90-arctan(0.1*40)-arctan(0.01*40)-arctan(40/0.375)-arctan(40/84.85)+arctan(40/3)+arctan(40/10.61) .
Question type: Mathematical calculation
Solution:
-90-arctan(0.1*40)-arctan(0.01*40)-arctan(40/0.375)-arctan(40/84.85)+arctan(40/3)+arctan(40/10.61)
=-90-arctan4-arctan(0.01*40)-arctan(40/0.375)-arctan(40/84.85)+arctan(40/3)+arctan(40/10.61)
=-90-arctan4-arctan0.4-arctan(40/0.375)-arctan(40/84.85)+arctan(40/3)+arctan(40/10.61)
=-90-arctan4-arctan0.4-arctan106.666667-arctan(40/84.85)+arctan(40/3)+arctan(40/10.61)
=-90-arctan4-arctan0.4-arctan106.666667-arctan0.47142+arctan(40/3)+arctan(40/10.61)
=-90-arctan4-arctan0.4-arctan106.666667-arctan0.47142+arctan13.333333+arctan(40/10.61)
=-90-arctan4-arctan0.4-arctan106.666667-arctan0.47142+arctan13.333333+arctan3.770028
=-90-1.325818-arctan0.4-arctan106.666667-arctan0.47142+arctan13.333333+arctan3.770028
=-90-1.325818-0.380506-arctan106.666667-arctan0.47142+arctan13.333333+arctan3.770028
=-90-1.325818-0.380506-1.561422-arctan0.47142+arctan13.333333+arctan3.770028
=-90-1.325818-0.380506-1.561422-0.440523+arctan13.333333+arctan3.770028
=-90-1.325818-0.380506-1.561422-0.440523+1.495936+arctan3.770028
=-90-1.325818-0.380506-1.561422-0.440523+1.495936+1.311517
=-91.325818-0.380506-1.561422-0.440523+1.495936+1.311517
=-91.706324-1.561422-0.440523+1.495936+1.311517
=-93.267746-0.440523+1.495936+1.311517
=-93.708269+1.495936+1.311517
=-92.212333+1.311517
=-90.900816
Answer:-90-arctan(0.1*40)-arctan(0.01*40)-arctan(40/0.375)-arctan(40/84.85)+arctan(40/3)+arctan(40/10.61)=-90.900816
Note: Radian