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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-arctan0.1×30-arctan0.01×30-arctan(1/0.375)*30-arctan(1/84.85)*30+arctan(1/3)*30+arctan(1/10.61)*30 .
Question type: Mathematical calculation
Solution:
-90-arctan0.1×30-arctan0.01×30-arctan(1/0.375)*30-arctan(1/84.85)*30+arctan(1/3)*30+arctan(1/10.61)*30
=-90-arctan0.1×30-arctan0.01×30-arctan2.666667*30-arctan(1/84.85)*30+arctan(1/3)*30+arctan(1/10.61)*30
=-90-arctan0.1×30-arctan0.01×30-arctan2.666667*30-arctan0.011786*30+arctan(1/3)*30+arctan(1/10.61)*30
=-90-arctan0.1×30-arctan0.01×30-arctan2.666667*30-arctan0.011786*30+arctan0.333333*30+arctan(1/10.61)*30
=-90-arctan0.1×30-arctan0.01×30-arctan2.666667*30-arctan0.011786*30+arctan0.333333*30+arctan0.094251*30
=-90-0.099669×30-arctan0.01×30-arctan2.666667*30-arctan0.011786*30+arctan0.333333*30+arctan0.094251*30
=-90-0.099669×30-0.01×30-arctan2.666667*30-arctan0.011786*30+arctan0.333333*30+arctan0.094251*30
=-90-0.099669×30-0.01×30-1.212026*30-arctan0.011786*30+arctan0.333333*30+arctan0.094251*30
=-90-0.099669×30-0.01×30-1.212026*30-0.011785*30+arctan0.333333*30+arctan0.094251*30
=-90-0.099669×30-0.01×30-1.212026*30-0.011785*30+0.32175*30+arctan0.094251*30
=-90-0.099669×30-0.01×30-1.212026*30-0.011785*30+0.32175*30+0.093973*30
=-90-2.99007-0.01×30-1.212026*30-0.011785*30+0.32175*30+0.093973*30
=-90-2.99007-0.3-1.212026*30-0.011785*30+0.32175*30+0.093973*30
=-90-2.99007-0.3-36.36078-0.011785*30+0.32175*30+0.093973*30
=-90-2.99007-0.3-36.36078-0.35355+0.32175*30+0.093973*30
=-90-2.99007-0.3-36.36078-0.35355+9.6525+0.093973*30
=-90-2.99007-0.3-36.36078-0.35355+9.6525+2.81919
=-92.99007-0.3-36.36078-0.35355+9.6525+2.81919
=-93.29007-36.36078-0.35355+9.6525+2.81919
=-129.65085-0.35355+9.6525+2.81919
=-130.0044+9.6525+2.81919
=-120.3519+2.81919
=-117.53271
Answer:-90-arctan0.1×30-arctan0.01×30-arctan(1/0.375)*30-arctan(1/84.85)*30+arctan(1/3)*30+arctan(1/10.61)*30=-117.53271
Note: Radian