Which equation is not an identity?

tan (-t) = - tan t

tan t (csc t + cot t) = sec t + 1

sin tcot t = cos t

cos2t - sin2t = - 1

Let U represent the set of all people that frequently visit a certain restaurant, surveyed about which food they like best. Let B = x ∈ U C = x likes Corn Dogs P = x ∈ U (Assume these sets are not disjoint.

Fifty eight thousand kilograms of solid waste is equivalent to how many metric tons

W-1/2=-2/5 solve for w

Explain how to estimate the length of the whale using compensation

Mel drove 230 Miles in 4 hours, and Pia drove 230 miles in 5 hours. Without making any calculations, who drove faster? Explain how you now.

A survey was given and here are the results "Number responding less than 1 week" Gender - X N Males - 71 411 Females - 64 253 a) Construct a 95% confidence interval for the difference in the proportions of males and females at this university.

Select the graph that would represent the best presentation of the solution set. | 5x - 1 | < 1

One number is one more than four times another. the sum of the numbers is 16. find the two numbers

What is 3x - 4 + 20 = 55

From a circular card sheet of radius 28 cm, two circles of radii 7 cm each and a rectangle of length 3 cm and breadth 2 cm are removed. Find the area of the remaining sheets