Hi, can somebody please explain to me how to find the pythagreon identities and quadnrant signs because I'm really confused, and can you please do some of these problems as example because I have a test on this soon and I really need some help. I've tried asking my teacher but I didn't understand when he explained so tysm! Also will give brainliest if you answer all the example problems! tysm!! example instructions: evaluate the expression given sin u= 2/3 with 0<u<pi/2 and cos v=-2/7 with pi<v<3pi/2

example problem no. 1: cos (v-u)

ex. 2: sin (v-u)

ex. 3: cos (u-v)

ex. 4: sin (u-v) ​

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c