Use the image below to answer the following question. Find the value of sin x and cos y. What relationship do the ratios of sin x and cos y share. Please help this is the only one I couldn’t get

What is the measure of the smallest angle in the diagram? 15 29 32 45

Given that abcd is a rhombus, what is the value of x?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.