fx-100MS/fx-570MS/
fx-991MS/
(2nd edition / S-V.P.A.M.)
Before Using the Calculator
Calculation Modes and Calculator Setup
Basic Calculations
- ▶Inputting Expression and Values
- ▶Arithmetic Calculations
- ▶Fraction Calculations
- ▶Percent Calculations
- ▶Degree, Minute, Second (Sexagesimal) Calculations
- ▶Multi-Statements
- ▶Using Engineering Notation
- ▶Using Engineering Symbols
- ▶Calculation History and Replay
- ▶Using Memory Functions
Function Calculations
- ▶Pi (π), Natural Logarithm Base e
- ▶Trigonometric Functions, Inverse Trigonometric Functions
- ▶Hyperbolic Functions, Inverse Hyperbolic Functions
- ▶Angle Unit Conversion
- ▶Exponential Functions, Logarithmic Functions
- ▶Power Functions and Power Root Functions
- ▶Integration Calculations
- ▶Differential Calculations
- ▶Rectangular-Polar Coordinate Conversion
- ▶Factorial (!)
- ▶Random Number (Ran#)
- ▶Permutation (nPr) and Combination (nCr)
- ▶Rounding function (Rnd)
- ▶Using CALC
- ▶Using SOLVE
- ▶Scientific Constants (fx-570MS/fx-991MS only)
- ▶Metric Conversion (fx-570MS/fx-991MS only)
Using Calculation Modes
- ▶Complex Number Calculations (CMPLX)
- ▶Statistical Calculations (SD, REG)
- ▶Base-n Calculations (BASE)
- ▶Equation Calculations (EQN)
- ▶Matrix Calculations (MAT) (fx-570MS/fx-991MS only)
- ▶Vector Calculations (VCT) (fx-570MS/fx-991MS only)
Technical Information
Trigonometric Functions, Inverse Trigonometric Functions
Trigonometric Functions
To change the default angle unit (degrees, radians, grads), press the key a number of times until you reach the angle unit setup screen shown below.
Press the number key (, , or ) that corresponds to the angle unit you want to use.
(90° = π/2 radians = 100 grads)
Example 1: sin 30° = 0.5 (Angle unit: Deg)
・・・・・(Deg)
30- 0.5
Example 2: cos(π3) = 0.5 (Angle unit: Rad)
・・・・・(Rad)
(π)3- 0.5
Example 3: tan(-35) = -0.612800788 (Angle unit: Gra)
・・・・・(Gra)
35- -0.612800788
Inverse Trigonometric Functions
Example 1: sin-1 0.5 = 30° (Angle unit: Deg)
・・・・・(Deg)
(sin-1) 05- 30.
Example 2: cos-1 √22 = 0.25π (= π4) (Angle unit: Rad)
・・・・・(Rad)
(cos-1)22
(π)- 0.25
Example 3: tan-1 0.741 = 36.53844577° (Angle unit: Deg)
・・・・・(Deg)
(tan-1) 0741- 36.53844577