Using Powers Of 10 In Entering Data; Natural Logarithms And Exponential Function; Trigonometric Functions; Inverse Trigonometric Functions - HP 49g+ User Manual

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Using powers of 10 in entering data

Powers of ten, i.e., numbers of the form -4.5×10

the V key. For example, in ALG mode:

Or, in RPN mode:

Natural logarithms (i.e., logarithms of base e = 2.7182818282) are

calculated by the keystroke combination ‚¹ (function LN) while its

inverse function, the exponential function (function EXP) is calculated by using

„¸. In ALG mode, the function is entered before the argument:

In RPN mode, the argument is entered before the function

Three trigonometric functions are readily available in the keyboard: sine

(S), cosine (T), and tangent (U). The arguments of these functions are

angles, therefore, they can be entered in any system of angular measure

(degrees, radians, grades). For example, with the DEG option selected, we

can calculate the following trigonometric functions:

In ALG mode:

In RPN mode:

The inverse trigonometric functions available in the keyboard are the arcsine

(ASIN), arccosine (ACOS), and arctangent (ATAN), available through the

keystroke combinations „¼, „¾, and „À, respectively.

Since the inverse trigonometric functions represent angles, the answer from

, etc., are entered by using