4
[ MODE ] [ MODE ]
DEG RAD GRAD
1
2
3
1 [ sin ] 30 [ = ]
DEG
sin 30
0.5
Example 25
cos (
3
2
π
rad ) = – 0.5
[ MODE ] [ MODE ]
DEG RAD GRAD
1
2
3
2 [ cos ] [ ( ] 2 [ 2nd ] [
π
] [
÷
] 3 [ = ]
RAD
cos ( 2
π
/ 3
– 0.5
Example 26
sin
-1
0.5
= 30 Deg.
[ MODE ] [ MODE ]
DEG RAD GRAD
1
2
3
1 [ 2nd ] [ sin
–1
] 0.5 [ = ]
DEG
sin
–1
0.5
30.
Example 27
cosh1.5 + 2 = 4.352409615
[ 2nd ] [ HYP ] [ cos ] 1.5 [ + ] 2 [ = ]
DEG
cosh 1.5 + 2
4.352409615
Example 28
sinh
-1
7
= 2.644120761
[ 2nd ] [ HYP ] [ 2nd ] [ sin
–1
] 7 [ = ]
DEG
sinh
–1
7
2.644120761
Example 29
12.755 = 12
45
18
12.755 [ = ] [ 2nd ] [
]
DEG
12.755
12
45
18
Example 30
2
45
10.5
= 2.752916667
2 [
] 45 [
] 10.5 [
] [ = ]
DEG
2 °
45 °
10.5 °
2
45
10.5
[
]
DEG
2 °
45 °
10.5 °
2.752916667
Example 31
If x = 5 , y = 30, what are r ,
θ
° Ans : r = 30.41381265
θ
= 80.53767779 °
[ ALPHA ] [ Pol ( ] 5 [
,
] 30 [ = ]
DEG
Pol ( 5, 30
30.41381265
[ 2nd ] [ RCL ] [ F ]
DEG
F =
80.53767779
Example 32
If r = 25 ,
θ
= 56°, what are x , y ? Ans : x =
13.97982259 y = 20.72593931
[ ALPHA ] [ Rec ( ] 25 [
,
] 56 [ = ]
DEG
Rec ( 25, 56
13.97982259
[ 2nd ] [ RCL ] [ F ]
DEG
F =
20.72593931
Example 33
840
!
4)]
–
[(7
!
7
=
7 [ 2nd ] [ nPr ] 4 [ = ]
DEG
7 lP 4
840.
Example 34
35
!
4)]
–
[(7
!
4
!
7
=
7 [ 2nd ] [ nCr ] 4 [ = ]
DEG
7 lC 4
35.
