TABULA/samples/angle sine and cosine
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This is SAMPLE0. To work with this sample, enter $0
angle sine and cosine ┌ ┌ ┌ ┌ {1} 1 rad angle │ │ │ └>{2} 57.296° ={1} │ │ └> {3} 57° 17' 44" ={1} │ └> ┌ {4} 0.841 / sine └> ├ {5} 0.540 / cosine └>{6} 1.382 / sin+cos
Rationale
Line {1} is an angle expressed in radians [rad]. In the SI system, angles (like their sines and cosines) are dimensionless. But TABULA treats [rad] as if it were a new independent SI base unit, not as dimensionless.
The effect of giving an angle its own independent dimension is to make it easy to convert an angle to different angle-formats (e.g. [deg], [dms]) by use of the units dropdown, which would otherwise get cluttered-up with irrelevant units.
Try it out
- Select line {1} then enter 4
Lines {2} and {3} will change to the corresponding angle in degrees, in two different formats. - Zero line {4}
Lines {1} {2} and {3} will change to show a zero angle, and lines {4} and {5} will change to show the sine and cosine of {1} (viz. 0 and 1 respectively)
Build this t-table
- Clear the t-table
- Edit the title to read: angle sine and cosine
- Make a new line {1}
- Change the units of line {1} to [rad]
- Edit the name of line {1} to read: angle
- Make a new dependent line {2} which always stays equal to {1}
- Change the units of line {2} to [°] ([deg])
- Make another new dependent line {3} which always stays equal to {1}
- Change the units of line {3} to [dms] (degrees - minutes - seconds)
- Create the remaining lines as in TABULA/samples/plot_test_using_Function_plotline.