Technologies Humanware Inc. APBT320 Manuale Utente
BrailleNote Apex QT User Guide
8-212
followed by ENTER. The result
"0.5" is displayed.
If the calculator is already set to degrees, it is not necessary to precede the calculation with D.
Notice that you don't have to close the brackets, KeyPlus does that for you. The meaning is clear
because there was only a single number entered. In general, if you don't type an opening bracket the
calculator closes the brackets after the following number, otherwise it is up to you. If you wanted to
find the sine of the sum of two 15 degree angles, for example, you must put brackets around the
addition as follows:
because there was only a single number entered. In general, if you don't type an opening bracket the
calculator closes the brackets after the following number, otherwise it is up to you. If you wanted to
find the sine of the sum of two 15 degree angles, for example, you must put brackets around the
addition as follows:
D CONTROL with S (15+15) ENTER.
The result
"0.5" is displayed.
To calculate the Arc Tangent of 2, press:
READ with T T 2
followed by ENTER. The result
"63.43495" is displayed.
To calculate the cosine of Pi radians divided by 3, press:
SHIFT with D CONTROL with C ( Y / 3 )
followed by ENTER. The result
"0.5" is displayed. Pressing SHIFT with D selects radians mode.
The parentheses causes KeyPlus to calculate PI / 3 before taking the cosine.
8.6.2
Square Roots and Squares.
The square and square root keys are SHIFT with Q and Q respectively. To calculate the square root
of the sum of 3 squared plus 4 squared, press:
of the sum of 3 squared plus 4 squared, press:
Q ( 3 SHIFT with Q + 4 SHIFT with Q )
followed by ENTER. The result
"5" is displayed. The square root operator precedes its number,
while the squared operator occurs after its number, following the written convention.