Casio fx-9860G SD - Manual (Page 91)

20050401
2-4-9
Function Calculations
k Coordinate Conversion
u u u u u Rectangular Coordinates u u u u u Polar Coordinates
• With polar coordinates,
θ can be calculated and displayed within a range of
–180
°< θ < 180° (radians and grads have same range).
• Be sure to specify Comp for Mode in the Setup screen.
Example Operation
Calculate r and
θ° when x = 14 and y = 20.7
!m(SET UP)cccccc
1(Deg)J
K
6(g)5(ANGL)6(g)1(Pol()
14,20.7)wJ
Calculate x and y when r = 25 and
θ = 56° 2(Rec()25,56)w
1 24.989
→ 24.98979792 (r)
2 55.928
→ 55.92839019 ( θ)
1 13.979
→ 13.97982259 (x)
2 20.725
→ 20.72593931 (y)