If the sun has an altitude of $90^ $, what is its position relative to the observer?

Answer

Directly overhead (the zenith)

Altitude measures the height above the horizon; a measurement of $0^ $ indicates the horizon itself, while $90^ $ indicates the point directly above the observer, known as the zenith.

If the sun has an altitude of $90^	$, what is its position relative to the observer?
sunastronomymovementPositionday