Which of the following are trigonometric identities? Check all that apply. A.
cscx - sinx
= cos x
CSC X
B. tanx cosx CSCX = 1
sin(x + y)
C. 1+cot x tan y =
sin x cos y
O D. 4cosx sinx = 2cosx + 1 - 2 sinx

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

Average acceleration: i have no idea how to do this.

Identify the number as a rational or irrational.explain. 127