The letter F contains several angles, including acute angles at the top and bottom of the vertical line, and right angles where the horizontal and vertical lines meet. Additionally, there are obtuse angles where the horizontal line intersects with the vertical line. Overall, the letter F showcases a variety of angles within its structure.
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right (90˚) and 180˚ angles
When you answer sequence questions, look for a repetition anywhere. We can see that the first letter and the last letter is an 'F' so the sequence must be FHEXFHEXF.... so your answer is F.
Assuming the question is in the context of pie charts, the angle which corresponds to a fraction, f, of the total is makes and angle at the centre of 2*pi*f radians (= 360*f degrees).
The letters E, F, and L contain right angles measuring 90 degrees
Because any angle increased by k*2pi radians (= k*360 degrees) where k is an integer, is, effectively, the same angle. This implies that f(x + 2kpi) = f(x) for any angle x and any trig function f. This gives f a maximum period of 2pi radians.