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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 arctan(20/2)+arctan(20/6)-arctan(20/12)-arctan(20/60)-arctan(20/80) .
Question type: Mathematical calculation
Solution:
arctan(20/2)+arctan(20/6)-arctan(20/12)-arctan(20/60)-arctan(20/80)
=arctan10+arctan(20/6)-arctan(20/12)-arctan(20/60)-arctan(20/80)
=arctan10+arctan3.333333-arctan(20/12)-arctan(20/60)-arctan(20/80)
=arctan10+arctan3.333333-arctan1.666667-arctan(20/60)-arctan(20/80)
=arctan10+arctan3.333333-arctan1.666667-arctan0.333333-arctan(20/80)
=arctan10+arctan3.333333-arctan1.666667-arctan0.333333-arctan0.25
=1.471128+arctan3.333333-arctan1.666667-arctan0.333333-arctan0.25
=1.471128+1.27934-arctan1.666667-arctan0.333333-arctan0.25
=1.471128+1.27934-1.030377-arctan0.333333-arctan0.25
=1.471128+1.27934-1.030377-0.32175-arctan0.25
=1.471128+1.27934-1.030377-0.32175-0.244979
=2.750468-1.030377-0.32175-0.244979
=1.720091-0.32175-0.244979
=1.398341-0.244979
=1.153362
Answer:arctan(20/2)+arctan(20/6)-arctan(20/12)-arctan(20/60)-arctan(20/80)=1.153362
Note: Radian