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Re: Trigometric circular functions..
No the calculator cannot do that.
But if you do [2nd][Pi] [EXE] then just after [2nd][tan-1][2nd][Ans] you get 1. If you use the inverse trigonometric functions you will never have a value such as pi/4 or pi or pi/2. If angle unit is set to degrees you recover the exact values of the angles (they are integers anyway.
Hope it helps.
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Count the number of digits (d) to the right of the decimal point of the decimal number.Example: 2.56 has 2 digits to the right of the decimal point, so d=2.
Calculate the factor (f) for making the decimal number an integer:
f = 10 to power d
Example: f = 10 power 2 = 100
Multiply and divide the decimal number x by the factor f:
x * f / f = y / f
2.56 * 100 / 100 = 256 / 100
Find the greatest common divisor (gcd) of the fraction.
gcd(256,100) = 4
Reduce the fraction by dividing the numerator and denominator by the gcd value:
256 / 100 = (256/4) / (100/4) = 64/25
One percent is equal to one hundredth:
1% = 1/100
So in order to convert percent to fraction, divide the percent by 100% and reduce the fraction.
For example 56% is equal to 56/100 with gcd=4 is equal to 14/25:
56% = 56/100 = 14/25
Here is a sample of the percentage calculations that the calculator can perform. You will not see among them the conversion from decimals to percentages. To convert from decimals to percents move the decimal mark 2 places to the right and append the % sign. To convert from percents to decimals, move the decimal mark 2 places to the left.
Use the DMS key marked degree, apostrophe, double quotation mark. Lets us call it [DMS] To enter an angle in degree minutes seconds or hour, minutes, seconds, type in the number of degrees, press the [DMS] key, enter the number of seconds, press the [DMS] key, enter the number of seconds then the [DMS] key. Press = the calculator displays the value in DMS units. If you press the DMS key again the number displayed is converted to decimal degrees. Example:enter 12 degrees, 15 minutes, and 25 seconds 12 [DMS]15[DMS]25[DMS] = Calculator displays 12 deg 15'25" Press the DMS key again and you see 12.2569444
I am not sure there is a question expressed here. If you have a formula you want to use to calculate some quantity in it, state the formula, provide the known values and we will show you how to enter it. As to what it serves for, I for one do not need to know.
The following examples will demonstrate how to
convert decimals into fractions using the TI-30Xa and TI-30Xa Solar.
Please be aware that TI-30Xa Solar School Edition calculators do not
have this functionality.