A second measures the period of time equal to 1 86400th of a day.
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You can use various properties of angles to find the measure of the second angle. For example, if you can see that the two angles form a right angle, then you know they add up to 90°, so you can subtract the known measure from 90° to find the measure of the other.
If its a right angle triangle then the second acute angle is 62 degrees
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An obtuse angle is any angle that's measurement is between 90 and 180 degrees. This type of angle lies in the second quadrant.