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Casio Master
8,046 Answers
Re: csc, sec functions
Hello, I have not yet seen a calculator that has a dedicated key for the cosecant , secant, nor cotangente functions, because they are directly connected with the sine, the cosine, and the tangente.
Do not confuse these functions with the inverse trigonometric functions, usually represented as arccosine = arccos; on calculators cos^-1, arcsine = arcsin ; on calculators sin^-1 arctangent= arctan ; on aclculators tan^-1
Correction: My TI92Plus, and the TI89Platinum do have commands for the secant, cosecant, and cotangent, but they are not accessed through dedicated keys.
Correction: My TI92Plus, and the TI89Platinum do have commands for the secant, cosecant, and cotangent, but they are not accessed through dedicated keys.
I checked the manual for the FX-115W and foun d no reference to the secant, cosecant and cotangent function. Would you care to verify what calculator you are using?
I checked the manual for the FX-115W and foun d no reference to the secant, cosecant and cotangent function. Would you care to verify what calculator you are using?
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The cot(x) is also known as the cotangent(x) and it equals 1/tan(x) which equals cos(x)/sin(x). I'm showing these formulas because your calculator may not have a cot button but it will probably have buttons for tan, cos, and sin.
Your calculator may also have buttons for tan-1, cos-1 and sin-1. These are the inverse functions for tan, cos, and sin. If you enter a number and then push the tan-1 button, the result is the angle whose tangent is the entered number. For example, it you enter 1 and push the tan-1 button the answer will be 45 deg because tan (45 deg) = 1.
Now let's look at the problem, cot(x) = -0.6. The first thing we need to know is do you want the answer in degrees or radians? Your calculator will have both modes. The default mode when you first turn it on is probably degrees. If this problem is in radians you will need to change the mode of your calculator over to radians before we start.
If cot(x) = -0.6, then tan(x) = 1/-0.6 from the formula I showed in the background section.
This means tan(x) = -1.6666666...
Now we just enter -1.66666667 and hit the tan-1 button to get the answer.
If we're operating in radians the answer is -1.0307 radians. If we're operating in degrees the answer is -59.036 deg.
Label of key [deg symbol ' "]. It is between [(-)] and [hyp]
To enter a value in decimal degrees 12.58 [deg ' "] [=] Screen displays 12.58 deg on top line and 12 deg 34' 48" on bottom line. Pressing the [deg ' "] key while this value is displayed will show 12.58
To enter a DMS value:
Press the [deg ' "] key after each number even if one of the numbers D,M,S is nill (0). Exemple Enter 25 deg 0 ' 48" 25 [deg ' "] 0 [deg ' "] 48 [deg ' "] [=] Screen displays 25 deg 0' 48" on bottom line Pressing the [deg ' "] key converts this result to decimal degrees 25.013
This showed you how to enter angles in DMS or DD. For the rest 'find the angles, etc.' you should refer to your trigonometry manual: You have the definitions of the trigonometric ratios, the sine law, the cosine law to resolve triangles.
There is not much you can do with the information you provide. One has to assume the application point to be (0,0) and the angle the vector makes with the positive X-axis is 60 degrees The X-Component is X_A=10*cos(60 deg) The Y-component is Y_A=10*sin(60 deg)
To calculate the values of the X, and Y components you must make sure the angle unit is degree.
Press [MODE]
Move cursor to the line that says RADIAN DEGREE
Highlight DEGREE and press [ENTER].
Press [2nd][QUIT] to exit the configuration screen.
Press [2nd][APPS] to open the (ANGLE) menu. The symbol for the minutes is the second in the list. To enter the seconds press [ALPHA] [+]. When entering an angle in D(egree)M(inute)S(second), you must enter the number of minutes even if it is zero. 12 deg 25" will give a syntax error, so you have to type 12 deg 0' 25"
To avoid errors make sure that the angle unit is THE ONE
required by your problem. To verify or to change the angle unit press
[SIFT][MODE] and select [3: Deg] for degrees, [4:Rad] for radians, or
[5:Grad] for grads.
Convert from rectangular to polar
[SHIFT][+] (Pol) . Screen displays Pol( You enter the X-coordinate, and the Y coordinate separated by a comma, then you close the parenthesis and press [=].
Exemple: Polar coordinate of the point (1,1) Pol( 1, 1) gives r=1.414213562 (square root of 2) θ=45
Here is how you enter it Press [SHIFT][MODE][2:LineIO] [SHIFT][POL] 1 [SHIF] [,] 1 [)] [=]
On this family of calculators, you do as follows Enter the first number (degrees), ex:15 Press [2nd][APPS] (ANGLE) to access the Angle functions Select [1: degree symbol] [ENTER] Main screen shows 15 deg Enter the minutes, ex 25 Press [2nd] [APPS](ANGLE) to access Angle functions Select [2:' apostrophe] [ENTER] Screen echoes 15 deg 25' Enter the seconds number, ex 32 Press [2nd][+] (") to access the double quotation mark Screen echoes 15 deg 25' 32" Press [ENTER] Calculator converts this in decimal degrees 15.42555556
To convert this back to DMS, press [ANGLE][|=>DMS][ENTER] and the calculator displays the original value 15 deg 25' 32"
The DEG indicator on the screen is a reminder to the user that the ANGLE unit is in degrees. You can change the angle unit to Radian or Grads. That does not have any incidence on other calculations. It only affects the computation of trigonometric functions : sine, cosine, tangent, arc cosine, arc sine and arctangent. So if you have syntax error in the calculation of the interest formula, I can assure you it has NOTHING to do with the angle unit. I do not see the formula you are trying to use, so I cannot be sure what you are doing wrong.
Possible wrong usage of the regular minus sign instead of the change sign (-) or (+/-)
Missing right parenthesis
A right parenthesis is inserted at the wrong place.
Incorrect use of the power function
I suggest you write the correct formula on paper and enter it step by step. A step is defined by an operation: multiplication, division, power. Start with the content of parentheses and work toward the outside. The last result is always the one stored in Answer memory (Ans).
Hello, To avoid errors make sure that the angle unit is THE ONE required by your problem. To verify or to change the angle unit press [SIFT][MODE] and select [3: Deg] for degrees, [4:Rad] for radians, or [5:Grad] for grads.
Convert from rectangular to polar
[SHIFT][+] (Pol) . Screen displays Pol( You enter the X-coordinate, and the Y coordinate separated by a comma, then you close the parenthesis and press [=].
Exemple: Polar coordinate of the point (1,1) Pol( 1, 1) gives r=1.414213562 (square root of 2) θ=45
Here is how you enter it Press [SHIFT][MODE][2:LineIO] [SHIFT][POL] 1 [SHIF] [,] 1 [)] [=]
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