What is the reciprocal course for a heading of 235 degrees?

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To determine the reciprocal course for a heading of 235 degrees, you need to add 180 degrees to the original heading. This is because the reciprocal heading is the direction that is directly opposite the current heading.

Starting with 235 degrees, when you add 180 degrees, you get:

235 + 180 = 415 degrees.

However, this value exceeds the standard navigation range of 0 to 360 degrees, so you must subtract 360 degrees to find an equivalent angle:

415 - 360 = 55 degrees.

Thus, the reciprocal course of a heading of 235 degrees is indeed 55 degrees. This understanding is essential for navigation, especially in scientific diving, where being precisely aware of your orientation under water is critical for safety and effective communication with your diving team.

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