What is 18/121 reduced? can you even reduce it?

Choose a second initial value that is 0.01 greater than the initial value from question 9. iterate it using the function, f, ten times. if necessary, you can round your results to the nearest ten-thousandth.

Can someone me do math because i am having a breakdown rn because i don’t get it

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?