How do you find the measure of this angle ?
1 answer:
The lines through the sides in the circle indicate that the three sides are all of the same length, and therefore share the same angle.
A shape inside a circle will always have its angles equal 360, so you can find the individual angle with the following equation:
Subtract 120 from both sides.
Divide both sides by 3.
mBC's angle is 80 degrees.
A shape inside a circle will always have its angles equal 360, so you can find the individual angle with the following equation:
Subtract 120 from both sides.
Divide both sides by 3.
mBC's angle is 80 degrees.
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Given that the subway stations are 930 m apart, the train have to be accerelated for half the distance and then decerelated for the rest of the distance.
Recall that the distance travelled by an object with an initial velocity, u, for a period of time, t, at an accereration, a, is given by
But, we assume that the train accelerates from rest, thus
The maximum speed is attained at half the center of the distance between subway stations (i.e. at distance = 465 m).
Thus, maximum speed = distance / time = 465 / 23.12 = 20.11 m/s.
Recall that the distance travelled by an object with an initial velocity, u, for a period of time, t, at an accereration, a, is given by
But, we assume that the train accelerates from rest, thus
The maximum speed is attained at half the center of the distance between subway stations (i.e. at distance = 465 m).
Thus, maximum speed = distance / time = 465 / 23.12 = 20.11 m/s.