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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*20)-arctan(0.01*20)-arctan(20/0.375)-arctan(20/84.85)+arctan(20/3)+arctan(20/10.61) .
Question type: Mathematical calculation
Solution:
-90-arctan(0.1*20)-arctan(0.01*20)-arctan(20/0.375)-arctan(20/84.85)+arctan(20/3)+arctan(20/10.61)
=-90-arctan2-arctan(0.01*20)-arctan(20/0.375)-arctan(20/84.85)+arctan(20/3)+arctan(20/10.61)
=-90-arctan2-arctan0.2-arctan(20/0.375)-arctan(20/84.85)+arctan(20/3)+arctan(20/10.61)
=-90-arctan2-arctan0.2-arctan53.333333-arctan(20/84.85)+arctan(20/3)+arctan(20/10.61)
=-90-arctan2-arctan0.2-arctan53.333333-arctan0.23571+arctan(20/3)+arctan(20/10.61)
=-90-arctan2-arctan0.2-arctan53.333333-arctan0.23571+arctan6.666667+arctan(20/10.61)
=-90-arctan2-arctan0.2-arctan53.333333-arctan0.23571+arctan6.666667+arctan1.885014
=-90-1.107149-arctan0.2-arctan53.333333-arctan0.23571+arctan6.666667+arctan1.885014
=-90-1.107149-0.197396-arctan53.333333-arctan0.23571+arctan6.666667+arctan1.885014
=-90-1.107149-0.197396-1.552049-arctan0.23571+arctan6.666667+arctan1.885014
=-90-1.107149-0.197396-1.552049-0.231485+arctan6.666667+arctan1.885014
=-90-1.107149-0.197396-1.552049-0.231485+1.421906+arctan1.885014
=-90-1.107149-0.197396-1.552049-0.231485+1.421906+1.083047
=-91.107149-0.197396-1.552049-0.231485+1.421906+1.083047
=-91.304545-1.552049-0.231485+1.421906+1.083047
=-92.856594-0.231485+1.421906+1.083047
=-93.088079+1.421906+1.083047
=-91.666173+1.083047
=-90.583126
Answer:-90-arctan(0.1*20)-arctan(0.01*20)-arctan(20/0.375)-arctan(20/84.85)+arctan(20/3)+arctan(20/10.61)=-90.583126
Note: Radian