PLEASE I need the answer and ill give brainliest (p. s. if you try to put links then ill report you and your whole account)

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

See attachment below and find the equivalent of tan(∠qsr)