Using the following triangle, what is the cotangent of angle B?

1.) cotB = c/b
2.) cotB = a/c
3.)cotB = b/a
4.) cotB = a/b

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables