It is Y.
tangent
tangent
72
They are:- circumference diameter radius sector arc chord segment tangent
Only once. A tangent line shares only one point with any single arc/curve.
ask someone els
It is probably arctan or arc tangent, the inverse of the tangent function.
The arc tangent is the recicple of the tangent which is also known as the cotangent. The tangent of π/2 is undefined, thus the cotangent would be zero.
It is Y.
tangent
It is true that the measure of a tangent-chord angle is half the measure of the intercepted arc inside the angle. When a tangent line intersects a chord of a circle, it creates an angle between the tangent line and the chord, known as the tangent-chord angle. If we draw a segment from the center of the circle to the midpoint of the chord, it will bisect the chord, and the tangent-chord angle will be formed by two smaller angles, one at each end of this segment. Now, the intercepted arc inside the tangent-chord angle is the arc that lies between the endpoints of the chord and is inside the angle. The measure of this arc is half the measure of the central angle that subtends the same arc, which is equal to the measure of the angle formed by the two smaller angles at the ends of the segment that bisects the chord. Therefore, we can conclude that the measure of a tangent-chord angle is half the measure of the intercepted arc inside the angle.
No, the letter G does not have any parallel lines, but there are a few ways of looking at it. If you assume the arc of the letter (the part that makes the shape of a C) as one line, then the letter G doesn't have any parallel lines. But... If you assume the arc as to being a lot of individual lines, and NOT an arc, then it is likely that the letter G does have a parallel line or two.
74 degrees
tangent
72
One. The line of symmetry for a 180 degree arc (a semicircle) is the line that bisects the arc.