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It supports mathematical functions (including trigonometric functions).
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*80)-arctan(0.01*80)-arctan(80/0.375)-arctan(80/84.85)+arctan(80/3)+arctan(80/10.61) .
Question type: Mathematical calculation
Solution:
-90-arctan(0.1*80)-arctan(0.01*80)-arctan(80/0.375)-arctan(80/84.85)+arctan(80/3)+arctan(80/10.61)
=-90-arctan8-arctan(0.01*80)-arctan(80/0.375)-arctan(80/84.85)+arctan(80/3)+arctan(80/10.61)
=-90-arctan8-arctan0.8-arctan(80/0.375)-arctan(80/84.85)+arctan(80/3)+arctan(80/10.61)
=-90-arctan8-arctan0.8-arctan213.333333-arctan(80/84.85)+arctan(80/3)+arctan(80/10.61)
=-90-arctan8-arctan0.8-arctan213.333333-arctan0.94284+arctan(80/3)+arctan(80/10.61)
=-90-arctan8-arctan0.8-arctan213.333333-arctan0.94284+arctan26.666667+arctan(80/10.61)
=-90-arctan8-arctan0.8-arctan213.333333-arctan0.94284+arctan26.666667+arctan7.540057
=-90-1.446441-arctan0.8-arctan213.333333-arctan0.94284+arctan26.666667+arctan7.540057
=-90-1.446441-0.674741-arctan213.333333-arctan0.94284+arctan26.666667+arctan7.540057
=-90-1.446441-0.674741-1.566109-arctan0.94284+arctan26.666667+arctan7.540057
=-90-1.446441-0.674741-1.566109-0.755986+arctan26.666667+arctan7.540057
=-90-1.446441-0.674741-1.566109-0.755986+1.533314+arctan7.540057
=-90-1.446441-0.674741-1.566109-0.755986+1.533314+1.438941
=-91.446441-0.674741-1.566109-0.755986+1.533314+1.438941
=-92.121182-1.566109-0.755986+1.533314+1.438941
=-93.687291-0.755986+1.533314+1.438941
=-94.443277+1.533314+1.438941
=-92.909963+1.438941
=-91.471022
Answer:-90-arctan(0.1*80)-arctan(0.01*80)-arctan(80/0.375)-arctan(80/84.85)+arctan(80/3)+arctan(80/10.61)=-91.471022
Note: Radian