Xy→r xy→rx coordinate, y coordinate

Chapter 5: Advanced Calculations — Advanced Keyboard

Rectangular to polar coordinate conversion functions

Conversion formulas: r = (x2 + y2)1/2, θ = tan-1(y/x)

3 xy→r( xy→r(x coordinate, y coordinate)

Returns polar

coordinate radius

value from X-Y

rectangular coordi-

nates.

4 xy→θ( xy→θ(x coordinate, y coordinate)

Returns polar coordinate θ value from X-Y rectangular coordinates.

The following ranges are used to find θ.

Degree mode: 0 ≤ θ ≤ 180

Radian mode: 0 ≤ θ ≤ 2π

Gradient mode: 0 ≤ θ ≤ 200

Polar to rectangular coordinate conversion functions

Conversion formulas: x = rcosθ, y = rsinθ

5 rθ→x( rθ→x(r coordinate, θ coordinate)

Returns rectangular

coordinate X value from r-θpolar

coordinates.

6 rθ→y( rθ→y(r coordinate, θ coordinate)

Returns rectangular

coordinate Y value from r-θpolar

coordinates.

EL-9900 specifications

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Overall, the Sharp EL-9900 stands out as a versatile scientific calculator packed with features designed to meet the needs of students and professionals alike. Its robust functionality, clear display, and user-friendly design make it a reliable tool for anyone engaged in mathematical and scientific pursuits. Whether used for basic calculations or advanced problem-solving, the EL-9900 remains a powerhouse in the realm of scientific calculators.

Sharp EL-9900 Xy→r xy→rx coordinate, y coordinate, Xy→θ xy→θx coordinate, y coordinate

Models: EL-9900