Casio FX-CG20 AU - Coordinate Conversion; Permutation and Combination; Polar Coordinates; Rectangular Coordinates

2-21
k Coordinate Conversion
u Rectangular Coordinates u Polar Coordinates
• With polar coordinates,  can be calculated and displayed within a range of
–180°<
 < 180° (radians and grads have same range).
• Be sure to specify Comp for Mode in the Setup screen.
Example Operation
Calculate
r and ° when x = 14 and y = 20.7
!m(SET UP)cccccc
1(Deg)J
K6(g)5(ANGLE)6(g)1(Pol()
14,20.7)w
Calculate
x and y when r = 25 and  = 56°
2(Rec() 25,56)w
k Permutation and Combination
u Permutation u Combination
• Be sure to specify Comp for Mode in the Setup screen.
Example 1 To calculate the possible number of different arrangements using 4
items selected from among 10 items
Formula Operation
10P4 = 5040
10K6(g)3(PROB)2(
nPr) 4w
Example 2 To calculate the possible number of different combinations of 4 items
that can be selected from among 10 items
Formula Operation
10C4 = 210
10K6(g)3(PROB)3(
nCr) 4w
1 24.989 → 24.98979792 (r)
2 55.928 → 55.92839019 ( )
θ
1 24.989 → 24.98979792 (r)
2 55.928 → 55.92839019 ( )
θ
1 13.979 → 13.97982259 (x)
2 20.725 → 20.72593931 (y)
1 13.979 → 13.97982259 (x)
2 20.725 → 20.72593931 (y)
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