For a given location, the Sun’s position is at 40° Altitude angle and 130° N Azimuth angle. The Zenith Angle of the Sun (in degree) at that given location is _________
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The Zenith angle is simply the complement of the Altitude angle. When the Sun is directly overhead, the Altitude angle is 90°, and the Zenith angle is 0°.
Given:
Altitude angle of the Sun = 40°
Azimuth angle of the Sun = 130° N
The Zenith angle is the angle between the Sun and the zenith (the point directly overhead). It can be calculated using the following formula:
\[
{Zenith angle} = 90^\circ - {Altitude angle}
\]
Substituting the given Altitude angle of 40° into the formula:
\[
{Zenith angle} = 90^\circ - 40^\circ = 50^\circ
\]
Thus, the Zenith angle of the Sun at the given location is 50°.