# viewing elevation angle derivations

1. viewing elevation angle from viewing zenith angle

   symbol | description | unit | variable name
   --- | --- | --- | ---
   \(\alpha_{V}\) | viewing elevation angle | \(deg\) | viewing_elevation_angle {:}
   \(\theta_{V}\) | viewing zenith angle | \(deg\) | viewing_zenith_angle {:}

   The pattern : for the dimensions can represent {time}, or no dimensions at all.

   \[\alpha_{V} = 90 - \theta_{V}\]