Q: What is the back azimuth of 245 degrees?

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85 degrees (provided the distance is not more than a few miles).

245 degrees Fahrenheit = 118.33 degrees Celsius

It's 4.07 degrees south of West.

That's very possible. It simply means that in order to find it, you face southeast, and then look straight ahead and some angle above the horizon. Viewed from the north or south pole, every star in your sky will have an azimuth of 135 degrees once every day. (But first you'd have to decide on a reference direction to designate as zero azimuth, since 'southeast' doesn't exist at the poles.)

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A BACK AZIMUTH IS A PROJECTION OF THE AZIMUTH FROM THE ORIGIN TO THE OPPOSITE SIDE OF THE AZIMUTH CIRCLE. i.e. THERE ARE 360 DEGREES IN AN AZIMUTH CIRCLE, THUS THE OPPOSITE DIRECTION IS 180 DEGREES.

To determine the back azimuth when the azimuth is more than 180 degrees, subtract 180 degrees from the original azimuth. If the resulting value is still greater than 180 degrees, subtract 180 degrees again to get the back azimuth. This process ensures that the back azimuth is within the range of 0 to 360 degrees.

As the request is for the back azimuth, then what is wanted is the reverse (or inverse) of the azimuth, 223 degrees. In other words, an object moved in the direction of 223 degrees (Southwest relatively), but now the desire is to reverse the travel in order to arrive at the starting point. (That starting point would have to be Northeast relatively.) One does not typically work with directions exceeding 360 degrees nor less than 0 degrees as that range is the range of a compass. Therefore, the back azimuth of 223 degrees, whatever it is, must be between zero and 360 degrees. To determine the back azimuth all that is necessary is the knowledge that 1) the back azimuth is the opposite direction of the azimuth and 2) 180 degrees either added or subtracted will yield the back azimuth, and 3) the correct back azimuth must be in the range of zero to 360 degrees. Given this knowledge and the variable definitions Ab = Back Azimuth and A = Azimuth, Ab = A + 180 or Ab = A - 180 But which equation yields the correct back azimuth? Using knowledge point #3 above, the correct result will be the one that is between zero and 360 degrees. Therefore, Ab = A - 180 = 223 - 180 = 43 degrees is the correct back azimuth. The other choice, Ab = A + 180 = 223 + 180 = 403 degrees, exceeds the range of the compass, so 403 degrees cannot be the correct back azimuth.

348 degrees. It is the exact opposite on a compass dial. 168 is 12 degrees before due south, so the back azimuth is 12 degrees before due north.

Nominally 274 degrees. But on the real, spherical earth, the farther north you are, and the farther apart the two points are, the more the true back-azimuth will depart from 274 degrees.

To convert a magnetic azimuth to grid azimuth, subtract G-M angle.” If you have a magnetic azimuth of 270 degrees, and the G-M angle is 8 degrees, your grid azimuth will be 262 degrees.

85 degrees (provided the distance is not more than a few miles).

degrees

The distance of a star on the horizon, measured in degrees, is called its azimuth. Azimuth is the angle measured clockwise from true north to the star's position in the sky. It can range from 0° (north) to 360° (back to north).

a back bearing is the reverse azimuth you are on. So, if you are moving on a bearing of north by northwest say at 22 degrees your back bearing is 202 degrees or the exact opposite.

Geodetic azimuth is when you measure in a Brunton compass from 0 to 360 degrees clockwise.

As of 2021, Betelgeuse has an azimuth of around 225 degrees and an altitude of about 27 degrees when observed from the northern hemisphere. These values will change throughout the night and over the course of the year due to the Earth's rotation and orbit.