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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-arctan0.1×7-arctan0.01×7-arctan(1/0.375)*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7 .
Question type: Mathematical calculation
Solution:
-90-arctan0.1×7-arctan0.01×7-arctan(1/0.375)*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7
=-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7
=-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan(1/3)*7+arctan(1/10.61)*7
=-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan(1/10.61)*7
=-90-arctan0.1×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
=-90-0.099669×7-arctan0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
=-90-0.099669×7-0.01×7-arctan2.666667*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
=-90-0.099669×7-0.01×7-1.212026*7-arctan0.011786*7+arctan0.333333*7+arctan0.094251*7
=-90-0.099669×7-0.01×7-1.212026*7-0.011785*7+arctan0.333333*7+arctan0.094251*7
=-90-0.099669×7-0.01×7-1.212026*7-0.011785*7+0.32175*7+arctan0.094251*7
=-90-0.099669×7-0.01×7-1.212026*7-0.011785*7+0.32175*7+0.093973*7
=-90-0.697683-0.01×7-1.212026*7-0.011785*7+0.32175*7+0.093973*7
=-90-0.697683-0.07-1.212026*7-0.011785*7+0.32175*7+0.093973*7
=-90-0.697683-0.07-8.484182-0.011785*7+0.32175*7+0.093973*7
=-90-0.697683-0.07-8.484182-0.082495+0.32175*7+0.093973*7
=-90-0.697683-0.07-8.484182-0.082495+2.25225+0.093973*7
=-90-0.697683-0.07-8.484182-0.082495+2.25225+0.657811
=-90.697683-0.07-8.484182-0.082495+2.25225+0.657811
=-90.767683-8.484182-0.082495+2.25225+0.657811
=-99.251865-0.082495+2.25225+0.657811
=-99.33436+2.25225+0.657811
=-97.08211+0.657811
=-96.424299
Answer:-90-arctan0.1×7-arctan0.01×7-arctan(1/0.375)*7-arctan(1/84.85)*7+arctan(1/3)*7+arctan(1/10.61)*7=-96.424299
Note: Radian