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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(80/2)+arctan(80/6)-arctan(80/12)-arctan(80/60)-arctan(80/80) .
Question type: Mathematical calculation
Solution:
arctan(80/2)+arctan(80/6)-arctan(80/12)-arctan(80/60)-arctan(80/80)
=arctan40+arctan(80/6)-arctan(80/12)-arctan(80/60)-arctan(80/80)
=arctan40+arctan13.333333-arctan(80/12)-arctan(80/60)-arctan(80/80)
=arctan40+arctan13.333333-arctan6.666667-arctan(80/60)-arctan(80/80)
=arctan40+arctan13.333333-arctan6.666667-arctan1.333333-arctan(80/80)
=arctan40+arctan13.333333-arctan6.666667-arctan1.333333-arctan1
=1.545802+arctan13.333333-arctan6.666667-arctan1.333333-arctan1
=1.545802+1.495936-arctan6.666667-arctan1.333333-arctan1
=1.545802+1.495936-1.421906-arctan1.333333-arctan1
=1.545802+1.495936-1.421906-0.927295-arctan1
=1.545802+1.495936-1.421906-0.927295-0.785398
=3.041738-1.421906-0.927295-0.785398
=1.619832-0.927295-0.785398
=0.692537-0.785398
=-0.092861
Answer:arctan(80/2)+arctan(80/6)-arctan(80/12)-arctan(80/60)-arctan(80/80)=-0.092861
Note: Radian