HP 39gII - Page 166

156 Using mathematical functions
i Common logarithm. Also accepts complex numbers.
LOG(value)
Example:
LOG(100) returns 2
S10
x
Common exponential (antilogarithm). Also accepts
complex numbers.
10^value
Example:
10^3 returns 1000
efg Sine, cosine, tangent. Inputs and outputs depend on the
current angle format (Degrees, Radians, or Grads).
SIN(value)
COS(value)
TAN(value)
Example:
TAN(45) returns 1 (Degrees mode).
SASIN Arc sine: sin
–1
x. Output range is from –90° to 90° or –π/
2 to π/2. Inputs and outputs depend on the current angle
format. Also accepts complex numbers.
ASIN(value)
Example:
ASIN(1) returns 90 (Degrees mode).
SACOS Arc cosine: cos
–1
x. Output range is from 0° to 180° or 0
to π. Inputs and outputs depend on the current angle
format. Also accepts complex numbers. Output will be
complex for values outside the normal cosine domain of
.
ACOS(value)
Example:
ACOS(1) returns 0 (Degrees mode).
1– x 1≤≤