Handspring Treo 180, User Manual

Page: 150 / 235

Page 150 Application Specific Tasks
Trigonometry buttons
Finance buttons
Finance buttons enable you to find an unknown variable value based on a group of known variable
values. For example, to calculate the monthly payment for a 30-year home loan of $100,000 with
an annual interest rate of 8%, you would enter the following variables:
■
Payments/year = 12
■
N = 360 (30 years x 12 months)
■
APR = 8
■
PV = 100,000
■
FV = 0
Using these variables, the answer would be -733.76 per month.
To solve this example:
1. Enter a value and then tap the corresponding variable button. Repeat this process until you’ve
entered the following four variables:
■
N = 360 (30 years x 12 months)
■
APR = 8
Calculates the sine of the current number.
Calculates the cosine of the current number.
Calculates the tangent of the current number.
Calculates the hyperbolic sine of the current number.
Calculates the hyperbolic cosine of the current number.
Calculates the hyperbolic tangent of the current number.
Calculates the arc (inverse) sine of the current number.
Calculates the arc (inverse) cosine of the current number.
Calculates the arc (inverse) tangent of the current number.
Calculates the arc (inverse) hyperbolic sine of the current number.
Calculates the arc (inverse) hyperbolic cosine of the current number.
Calculates the arc (inverse) hyperbolic tangent of the current number.