Sharp EL9900C EL-9900C - Page 85
x coordinate, y coordinate, r coordinate, coordinate
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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 coordinates. 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: 0 180 Radian mode: 0 2π Gradient mode: 0 200 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-θ polar coordinates. 6 rθ→y( rθ→y(r coordinate, θ coordinate) Returns rectangular coordinate Y value from r-θ polar coordinates. 75