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2: cosh
-1
1 = 0
(cosh
-1
) 1 0
°,
r
,
g
:
° ,
r
g
:
(DRG )
: π/2 = 90°, 50 = 45° (: Deg)
(π) 2 (DRG ) (
r
)
90
50
(DRG ) (
g
) 45
: e
5
× 2
(Sci 3)
(SETUP) (Sci)
(MthlO-MathO) ( ) 5 2 2.97×10
2
(LinelO) ( ) 5 2 2.97×10
2
log
a
b log (a,b)
10
a
1: log
10
1000 = log 1000 = 3
1000 3
2: log
2
16 = 4
2 (,) 16 4
(MthIO-MathO, MthIO-LineO) 2 16 4
28