”
x-2.
3r + 1
39
R
26
Find the missing value of TS

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

How is this equation completed? i cannot find any examples in the book.

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6