https://www.mathworks.com/matlabcentral/fileexchange/32383-spherical-earth-elevation-angle
Spherical Earth Elevation Angle - File Exchange - MATLAB Central
Download and share free MATLAB code, including functions, models, apps, support packages and toolboxes
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https://www.mathworks.com/help/phased/ref/az2broadside.html
az2broadside - Convert azimuth and elevation angle to broadside angle - MATLAB
This MATLAB function returns the broadside angle, bsang, corresponding to the azimuth angle, az, and zero elevation angle.
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https://www.dummies.com/article/angle-of-elevation-and-angle-of-depression-in-trigonometry-functions-149295
Angle of Elevation and Angle of Depression in Trigonometry Functions | dummies
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