Mathematics
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中文
Language:English
==equ==
Unary equation
Multivariate equation
==cal==
Solution inequality
Mathematical calculation
Fractional calculation
Mathematical statistics
Resolving prime factor
Fraction and Decimal Interactions
Lenders ToolBox
==LiAl==
Determinant
Matrix multiplication
Inverse matrix
==der==
Derivative function
==img==
Function image
==que==
Q&A
current location:Mathematical operation > History of Mathematical Computation
arctan(120/115)+arctan(120/65)
arctan(66/(-0.2*88+1))-arctan(66/(-0.02*88+1))-arctan(-90*1.732/65)-arctan(-90*1.732/115)
-0.9^-0.9
4*4*16+4*8*8*2-8*8*4*2-16*16
cos(67)/cos(22)*150
cos(22)/cos(67)*150
180+arctan(-90*1.732/65)+180+arctan(-90*1.732/115)
arctan(106.1/131.1)+arctan(106.1/81.1)
-arctan(-90*1.732/65)-arctan(-90*1.732/115)
arctan(43.6/114.98)+arctan(43.6/65.02)
arctan(3^0.5/2)
-2^-2
arctan(-(3)^0.5/2)
arccos0.9
-1^-1
-arctan(-3^0.5/2)-90
sin(arccos0.9)
arccos(0.8)
arctan(-1.732/2)
-arctan(-66/63)-arctan(-66/113)
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