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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-arctan0.1×20-arctan0.01×20-arctan(1/0.375)*20-arctan(1/84.85)*20+arctan(1/3)*20+arctan(1/10.61)*20 .
Question type: Mathematical calculation
Solution:
-90-arctan0.1×20-arctan0.01×20-arctan(1/0.375)*20-arctan(1/84.85)*20+arctan(1/3)*20+arctan(1/10.61)*20
=-90-arctan0.1×20-arctan0.01×20-arctan2.666667*20-arctan(1/84.85)*20+arctan(1/3)*20+arctan(1/10.61)*20
=-90-arctan0.1×20-arctan0.01×20-arctan2.666667*20-arctan0.011786*20+arctan(1/3)*20+arctan(1/10.61)*20
=-90-arctan0.1×20-arctan0.01×20-arctan2.666667*20-arctan0.011786*20+arctan0.333333*20+arctan(1/10.61)*20
=-90-arctan0.1×20-arctan0.01×20-arctan2.666667*20-arctan0.011786*20+arctan0.333333*20+arctan0.094251*20
=-90-0.099669×20-arctan0.01×20-arctan2.666667*20-arctan0.011786*20+arctan0.333333*20+arctan0.094251*20
=-90-0.099669×20-0.01×20-arctan2.666667*20-arctan0.011786*20+arctan0.333333*20+arctan0.094251*20
=-90-0.099669×20-0.01×20-1.212026*20-arctan0.011786*20+arctan0.333333*20+arctan0.094251*20
=-90-0.099669×20-0.01×20-1.212026*20-0.011785*20+arctan0.333333*20+arctan0.094251*20
=-90-0.099669×20-0.01×20-1.212026*20-0.011785*20+0.32175*20+arctan0.094251*20
=-90-0.099669×20-0.01×20-1.212026*20-0.011785*20+0.32175*20+0.093973*20
=-90-1.99338-0.01×20-1.212026*20-0.011785*20+0.32175*20+0.093973*20
=-90-1.99338-0.2-1.212026*20-0.011785*20+0.32175*20+0.093973*20
=-90-1.99338-0.2-24.24052-0.011785*20+0.32175*20+0.093973*20
=-90-1.99338-0.2-24.24052-0.2357+0.32175*20+0.093973*20
=-90-1.99338-0.2-24.24052-0.2357+6.435+0.093973*20
=-90-1.99338-0.2-24.24052-0.2357+6.435+1.87946
=-91.99338-0.2-24.24052-0.2357+6.435+1.87946
=-92.19338-24.24052-0.2357+6.435+1.87946
=-116.4339-0.2357+6.435+1.87946
=-116.6696+6.435+1.87946
=-110.2346+1.87946
=-108.35514
Answer:-90-arctan0.1×20-arctan0.01×20-arctan(1/0.375)*20-arctan(1/84.85)*20+arctan(1/3)*20+arctan(1/10.61)*20=-108.35514
Note: Radian