# fx-FD10 Pro Program

## 21 preloaded basic formula programs useful at civil engineering surveying work

Function
Program Name
Description
Axis Transformation
Calculate coordinates when the coordinate axis is moved or rotated.
Right Triangle Trigonometry
Calculate horizontal distance and vertical distance (height) to the hypotenuse.
Pythagorean
Calculate the hypotenuse of a right triangle using the Pythagorean Theorem.
Coordinate Calculation
Calculate the coordinates of a sought point.
Bearing Angle
Calculate the bearing angle to a sought point.
Traverse Calculation
Calculate the coordinates and angle of direction of a sought point using traverse calculation.
Inverse Calculation
Calculate the angle of direction, distance, and bearing angle of each point using inverse calculation.
Decentering
Calculate the eccentric angle and the distance between measured points in eccentric observation.
Middle Ordinate
Calculate the middle ordinate of a simple curve.
Single Curve
Calculate the elements of a simple curve.
Clothoid Curve
Calculate the elements of a clothoid curve.
Vertical Curve
Calculate the length of a vertical curve.
Forward Intersection
Calculate the coordinates of a sought point from the coordinates of two points and bearing angle.
Backward Intersection
Calculate the coordinates of a sought point from the distance to each of two points and their coordinates.
Coordinates of Intersection (3 Points & 1 Angle)
Calculate the coordinates of a point of intersection from the coordinates of three points and one angle of direction.
Coordinates of Intersection (4 Points)
Calculate the coordinates of a point of intersection from the coordinates of four points.
Calculation of Perpendicular Coordinate and Distance
Calculate the point of intersection with a perpendicular straight line suspended from a point and the perpendicular distance.
Area of Triangle
Calculate the area of a triangle from the coordinates of three points.
Calculate the area of a quadrangle from the coordinates of four points.
Heron Formula
Calculate the area of a triangle using Heron's Formula.
Calculate the horizontal distance to a staff and relative elevation from measured values using stadia surveying.

## 1.AXISTRAN：Axis Transformation

Calculate coordinates when the coordinate axis is moved or rotated.

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## 2.R-TRIG：Right Triangle Trigonometry

Calculate horizontal distance and vertical distance (height) to the hypotenuse.

## 3.PYTHAGOR：Pythagorean

Calculate the hypotenuse of a right triangle using the Pythagorean Theorem.

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## 4.COORD：Coordinate Calculation

Calculate the coordinates of a sought point.

## 5.ANGLE：Bearing Angle

Calculate the bearing angle to a sought point.

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## 6.TRAVERSE：Traverse Calculation

Calculate the coordinates and angle of direction of a sought point using traverse calculation.

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## 7.INVERSE：Inverse Calculation

Calculate the angle of direction, distance, and bearing angle of each point using inverse calculation.

## 8.DECENTER：Decentering

Calculate the eccentric angle and the distance between measured points in eccentric observation.

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## 9.MID-ORD：Middle Ordinate

Calculate the middle ordinate of a simple curve.

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## 10.S-CURVE：Single Curve

Calculate the elements of a simple curve.

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## 11.CL-CURVE：Clothoid Curve

Calculate the elements of a clothoid curve.

## 12.V-CURVE：Vertical Curve

Calculate the length of a vertical curve.

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## 13.FORWARD：Forward Intersection

Calculate the coordinates of a sought point from the coordinates of two points and bearing angle.

## 14.BACKWARD：Backward Intersection

Calculate the coordinates of a sought point from the distance to each of two points and their coordinates.

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## 15.INTSEC1：Coordinates of Intersection (3 Points & 1 Angle)

Calculate the coordinates of a point of intersection from the coordinates of three points and one angle of direction.

## 16.INTSEC2：Coordinates of Intersection (4 Points)

Calculate the coordinates of a point of intersection from the coordinates of four points.

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## 17.V-LINE：Calculation of Perpendicular Coordinate and Distance

Calculate the point of intersection with a perpendicular straight line suspended from a point and the perpendicular distance.

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## 18.TRIANGLE：Area of Triangle

Calculate the area of a triangle from the coordinates of three points.

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Calculate the area of a quadrangle from the coordinates of four points.

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## 20.HERON：Heron Formula

Calculate the area of a triangle using Heron's Formula.

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