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Before Using the Calculator
- ▶Read This First
- ▶Initializing the Calculator
- ▶Calculator "Get Started" Screen
- ▶Precautions
- ▶Getting Started
Calculator Apps and Menus
Inputting Expressions and Values
- ▶Basic Input Rules
- ▶Inputting an Expression Using Natural Textbook Format (MathI/MathO or MathI/DecimalO Only)
- ▶Overwrite Input Mode (LineI/LineO or LineI/DecimalO Only)
Basic Calculations
- ▶Arithmetic Calculations
- ▶Fraction Calculations
- ▶Powers, Power Roots, and Reciprocals
- ▶Pi, Natural Logarithm Base e
- ▶Calculation History and Replay
- ▶Using Memory Functions
Changing Calculation Result Format
- ▶Using the FORMAT Menu
- ▶Standard and Decimal Conversion
- ▶Prime Factorization
- ▶Recurring Decimal Conversion (Recurring Decimal Calculations)
- ▶Improper Fraction and Mixed Fraction Conversion
- ▶Engineering Notation
- ▶Sexagesimal Conversion (Degree, Minute, Second Calculations)
Advanced Calculations
- ▶Function Analysis
- ▶Probability
- ▶Numeric Calculations
- ▶Angle Unit, Polar/Rectangular Coordinate, Sexagesimal
- ▶Hyperbolic, Trigonometric
- ▶Others
Registering and Using Defining Equations for f(x) and g(x)
Using QR Code Functions
Using Calculator Apps
Technical Information
- ▶Errors
- ▶Before Assuming Malfunction of the Calculator...
- ▶Replacing the Battery
- ▶Calculation Priority Sequence
- ▶Calculation Ranges, Number of Digits, and Precision
- ▶Specifications
Frequently Asked Questions
Angle Unit, Polar/Rectangular Coordinate, Sexagesimal
This section explains commands, functions, and symbols that you can input after performing the operation: – [Angle/Coord/Sexa].
Degrees, Radians, Gradians
These functions specify the angle unit.
° specifies degree, r radian, and g gradian.
You can input each function using the menu items below.
– [Angle/Coord/Sexa] > [Degrees]
– [Angle/Coord/Sexa] > [Radians]
– [Angle/Coord/Sexa] > [Gradians]
Example: π/2 radians = 90° (Angle Unit: Degree)
(π)
2
– [Angle/Coord/Sexa] > [Radians]
Rect to Polar, Polar to Rect
"Pol(" converts rectangular coordinates to polar coordinates, while "Rec(" converts polar coordinates to rectangular coordinates.

Specify the Angle Unit on the SETTINGS menu before performing calculations.
The calculation result for r and θ and for x and y are each stored respectively to variables x and y.
Calculation result θ is displayed in the range of -180° < θ ≤ 180°.
Note
Pol( and Rec( can be used on the calculation screen of the calculator apps below.
Calculate, Statistics
Example 1: To convert rectangular coordinates (√2, √2) to polar coordinates (Input/Output: MathI/MathO, Angle Unit: Degree)
– [Angle/Coord/Sexa] > [Rect to Polar]
2
(,)
2
Example 2: To convert polar coordinates (√2, 45°) to rectangular coordinates (Input/Output: MathI/MathO, Angle Unit: Degree)
– [Angle/Coord/Sexa] > [Polar to Rect]
2
(,) 45
Degrees, Minutes, Seconds
You can use the keys or the menu item below to input the sexagesimal symbol ().
(
)
– [Angle/Coord/Sexa] > [Degs Mins Secs] For details, see "Sexagesimal Conversion (Degree, Minute, Second Calculations)".