1) Find the length of the circular arc connecting the points (1,0) and (0,1) on the unit circle

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1) Find the length of the circular arc connecting the points (1,0) and (0,1) on the unit circle. (Recall that the unit circle is the circle with center (0,0) and radius 1.)

2. Find the length of the circular arc on the unit circle connecting the endpoint of the radius corresponding to the angle 50° and the radius corresponding to the angle 200° .

3. Does the line ???? = −???? + √2 intersect the unit circle? Justify your response.

4. Does the line ???? = −???? + 2 intersect the unit circle? Justify your response.