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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(4*7.5)-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5) .
Question type: Mathematical calculation
Solution:
90-arctan(4*7.5)-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5)
=90-arctan30-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5)
=90-arctan30-arctan0.15-arctan(0.02*7.5)+arctan(1*7.5)
=90-arctan30-arctan0.15-arctan0.15+arctan(1*7.5)
=90-arctan30-arctan0.15-arctan0.15+arctan7.5
=90-1.537475-arctan0.15-arctan0.15+arctan7.5
=90-1.537475-0.14889-arctan0.15+arctan7.5
=90-1.537475-0.14889-0.14889+arctan7.5
=90-1.537475-0.14889-0.14889+1.438245
=88.462525-0.14889-0.14889+1.438245
=88.313635-0.14889+1.438245
=88.164745+1.438245
=89.60299
Answer:90-arctan(4*7.5)-arctan(0.02*7.5)-arctan(0.02*7.5)+arctan(1*7.5)=89.60299
Note: Radian