EXAMPLE

Excerpt
This example illustrates how to apply basic trigonometric functions to your transformations.

Functions:

D generate list excerpts

pages	SIN Function,COS Function,TAN Function

The following functions are computed using the above functions:

Also:

D generate list excerpts

pages	ROUND Function,RADIANS Function

Source:

In the following sample, input values are in degrees:

Transformation:

In this example, all values are rounded to three decimals for clarity.

First, the above values in degrees must be converted to radians.

D trans

RawWrangle	true
p03Value	'rX'
Type	step
WrangleText	derive type: single value: round(radians(X), 3) as: 'rX'
p01Name	Formula type
p01Value	Single row formula
p02Name	Formula
p02Value	round(radians(X), 3)
p03Name	New column name
SearchTerm	New formula

Sine:

D trans

RawWrangle	true
p03Value	'SINrX'
Type	step
WrangleText	derive type: single value: round(sin(rX), 3) as: 'SINrX'
p01Name	Formula type
p01Value	Single row formula
p02Name	Formula
p02Value	round(sin(rX), 3)
p03Name	New column name
SearchTerm	New formula

Cosine:

D trans

RawWrangle	true
p03Value	'COSrX'
Type	step
WrangleText	derive type: single value: round(cos(rX), 3) as: 'COSrX'
p01Name	Formula type
p01Value	Single row formula
p02Name	Formula
p02Value	round(cos(rX), 3)
p03Name	New column name
SearchTerm	New formula

Tangent:

D trans

RawWrangle	true
p03Value	'TANrX'
Type	step
WrangleText	derive type: single value: round(tan(rX), 3) as: 'TANrX'
p01Name	Formula type
p01Value	Single row formula
p02Name	Formula
p02Value	round(tan(rX), 3)
p03Name	New column name
SearchTerm	New formula

Cotangent:

D trans

RawWrangle	true
p03Value	'COTrX'
Type	step
WrangleText	derive type: single value: round(1 / tan(rX), 3) as: 'COTrX'
p01Name	Formula type
p01Value	Single row formula
p02Name	Formula
p02Value	round(1 / tan(rX), 3)
p03Name	New column name
SearchTerm	New formula

Secant:

D trans

RawWrangle	true
p03Value	'SECrX'
Type	step
WrangleText	derive type: single value: round(1 / cos(rX), 3) as: 'SECrX'
p01Name	Formula type
p01Value	Single row formula
p02Name	Formula
p02Value	round(1 / cos(rX), 3)
p03Name	New column name
SearchTerm	New formula

Cosecant:

D trans

RawWrangle	true
p03Value	'CSCrX'
Type	step
WrangleText	derive type: single value: round(1 / sin(rX), 3) as: 'CSCrX'
p01Name	Formula type
p01Value	Single row formula
p02Name	Formula
p02Value	round(1 / sin(rX), 3)
p03Name	New column name
SearchTerm	New formula

Results:

X	rX	COTrX	SECrX	CSCrX	TANrX	COSrX	SINrX
-30	-0.524	-1.73	1.155	-1.999	-0.578	0.866	-0.5
0	0	null	1	null	0	1	0
30	0.524	1.73	1.155	1.999	0.578	0.866	0.5
45	0.785	1.001	1.414	1.415	0.999	0.707	0.707
60	1.047	0.578	1.999	1.155	1.731	0.5	0.866
90	1.571	0	-4909.826	1	-4909.826	0	1
120	2.094	-0.577	-2.001	1.154	-1.734	-0.5	0.866
135	2.356	-1	-1.414	1.414	-1	-0.707	0.707
180	3.142	2454.913	-1	-2454.913	0	-1	0

D s also

label	example_trigonometry_functions

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