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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 -90-arctan(0.12×70)-arctan(0.02×70)-arctan(1/0.205×70)-arctan(1/23.894×70)+arctan(1/1.3×70)+arctan(1/7.073×70) .
Question type: Mathematical calculation
Solution:
-90-arctan(0.12×70)-arctan(0.02×70)-arctan(1/0.205×70)-arctan(1/23.894×70)+arctan(1/1.3×70)+arctan(1/7.073×70)
=-90-arctan8.4-arctan(0.02×70)-arctan(1/0.205×70)-arctan(1/23.894×70)+arctan(1/1.3×70)+arctan(1/7.073×70)
=-90-arctan8.4-arctan1.4-arctan(1/0.205×70)-arctan(1/23.894×70)+arctan(1/1.3×70)+arctan(1/7.073×70)
=-90-arctan8.4-arctan1.4-arctan341.46343-arctan(1/23.894×70)+arctan(1/1.3×70)+arctan(1/7.073×70)
=-90-arctan8.4-arctan1.4-arctan341.46343-arctan2.92964+arctan(1/1.3×70)+arctan(1/7.073×70)
=-90-arctan8.4-arctan1.4-arctan341.46343-arctan2.92964+arctan53.84617+arctan(1/7.073×70)
=-90-arctan8.4-arctan1.4-arctan341.46343-arctan2.92964+arctan53.84617+arctan9.89681
=-90-1.452306-arctan1.4-arctan341.46343-arctan2.92964+arctan53.84617+arctan9.89681
=-90-1.452306-0.950547-arctan341.46343-arctan2.92964+arctan53.84617+arctan9.89681
=-90-1.452306-0.950547-1.567868-arctan2.92964+arctan53.84617+arctan9.89681
=-90-1.452306-0.950547-1.567868-1.241858+arctan53.84617+arctan9.89681
=-90-1.452306-0.950547-1.567868-1.241858+1.552227+arctan9.89681
=-90-1.452306-0.950547-1.567868-1.241858+1.552227+1.470095
=-91.452306-0.950547-1.567868-1.241858+1.552227+1.470095
=-92.402853-1.567868-1.241858+1.552227+1.470095
=-93.970721-1.241858+1.552227+1.470095
=-95.212579+1.552227+1.470095
=-93.660352+1.470095
=-92.190257
Answer:-90-arctan(0.12×70)-arctan(0.02×70)-arctan(1/0.205×70)-arctan(1/23.894×70)+arctan(1/1.3×70)+arctan(1/7.073×70)=-92.190257
Note: Radian