The reference angle for an angle whose measure is -440° is _____. 60° 80° 100°
1 answer:
Answer:
80°
Step-by-step explanation:
The reference angle is the smallest angle that the terminal side of a given angle makes with the x-axis.
An angle of -440° lies in the fourth quadrant.
For an angle θ in the fourth quadrant, the reference angle is 360° + θ.
The reference angle is
360° - 440° = 80°
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For the problem in the upper left corner, see "figure 1"
For the problem in the upper right corner, see "figure 2"
For the problem in the lower left corner, see "figure 3"
For the problem in the lower right corner, see "figure 4"
For the problem in the upper right corner, see "figure 2"
For the problem in the lower left corner, see "figure 3"
For the problem in the lower right corner, see "figure 4"
Answer:
Step-by-step explanation:
the displacement of the particle is given by
The rate of change of position gives the value of velocity.
So, v = ds/dt
Differentiate the position function with respect to time.
Now, at t = a
v = -18/a³ m/s
At t = 1
v = - 18 m/s
At t = 2
v = - 18 / 8 = - 2.25 m/s
At t = 3
v = - 18 / 27 = 0.67 m/s