That depends what you want to calculate.
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The takeoff for a 30 degree angle will depend with the offset angle.
Yes and they are both acute angles
a 60-degree angle
A 30 degree angle is an acute angle because it is greater than 0 but less than 90 degrees.
the 30 degree angle is near the equator and the 90 degree angle is near the trop of Capricorn and cancer