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In Problems 79-84, use the following discussion. The formula can be used to approximate the number of hours of daylight D when the declination of the Sun is at a location north latitude for any date between the vernal equinox and autumnal equinox. The declination of the Sun is defined as the angle between the equatorial plane and ray of light from the Sun. The latitude of a location is the angle between the Equator and the location on the surface of Earth, with the vertex of the angle located at the center of Earth. See the figure. To use the formula, must be expressed in radians.
Approximate the number of hours of daylight in New York, New York ( north latitude), for the following dates:
Summer solstice
Vernal equinox
July 4
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To calculate: The number of hours of daylight at the location north latitude Approximate the number of hours of daylight in New York , New york , for the following dates:
a.
Answer to Problem 70AYU
Solution:
a. .
Explanation of Solution
Given:
The declination of the Sun is defined as the angle between the equatorial plane and any ray of light from the Sun. The latitude of a location is the angle between the Equator and the location on the surface of Earth, with the vertex of the angle located at the center of Earth.
a. .
Formula used:
Calculation:
a. .
Convert degree into radians.
![Check Mark](/static/check-mark.png)
To calculate: The number of hours of daylight at the location north latitude Approximate the number of hours of daylight in New York , New york , for the following dates:
b. .
Answer to Problem 70AYU
Solution:
b.
Explanation of Solution
Given:
The declination of the Sun is defined as the angle between the equatorial plane and any ray of light from the Sun. The latitude of a location is the angle between the Equator and the location on the surface of Earth, with the vertex of the angle located at the center of Earth.
b.
Formula used:
Calculation:
Convert degree into radians.
![Check Mark](/static/check-mark.png)
To calculate: The number of hours of daylight at the location north latitude Approximate the number of hours of daylight in New York , New york , for the following dates:
c. .
Answer to Problem 70AYU
Solution:
c. .
Explanation of Solution
Given:
The declination of the Sun is defined as the angle between the equatorial plane and any ray of light from the Sun. The latitude of a location is the angle between the Equator and the location on the surface of Earth, with the vertex of the angle located at the center of Earth.
c.
Formula used :
Calculation:
Convert degree into radians.
Chapter 7 Solutions
Precalculus
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