If cot theta is undefined, then what is the value of tan theta

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?