IS TIMED :
Find tan–1 1.4281 to the nearest degree.
a.10°
c.5°
b.55°
d.35°

Using a scientific calculator or graphing calculator find the inverse tangent of the ratio. Round to the nearest degree.
3/1

a.71°
b.19°
c.72°
d.18°

Using a scientific calculator or graphing calculator find the inverse tangent of the ratio. Round to the nearest degree.

1/1

a.45°
b.90°
c.0°
d.1°

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?