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# Common Core Standard HSF-TF.A.1 Questions

Understand radian measure of an angle as the length of the arc on the unit circle subtended by the angle.

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$(-4pi)/3$ is equivalent to
1. $(-2pi)/6$
2. $(4pi)/3$
3. $pi/3$
4. $(2pi)/3$
On the unit circle (radius of 1) the arc distance from $0deg$ to $90deg$ is
1. $90$
2. $pi/2$
3. $.25$
4. $pi$
An arc distance of 2.62 m on a circle with a radius of 1 m would subtend and arc angle of how many radians?
1. $pi/2$
2. $(5pi)/3$
3. $(5pi)/6$
4. $(7pi)/6$
On the unit circle (radius of 1) the arc distance from $0deg$ to $90deg$ is
1. $90$
2. $pi/2$
3. $.25$
4. $pi$
$-pi/3$ is equivalent to
1. $(5pi)/6$
2. $(4pi)/3$
3. $pi/3$
4. $(5pi)/3$
How many radians are equivalent to $315deg$?
1. $pi$
2. $(7pi)/4$
3. $(7pi)/6$
4. $(5pi)/4$
$720deg$ is equivalent to how many radians?
1. $4pi$
2. $pi/4$
3. $2pi$
4. $pi/2$

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