Could someone me with this? no guessing! explain how you got the answer! and make sure your answer is correct! : ) everyone in advance! : ) btw i will give brainliest: )

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.