Triangle A B C is shown. Angle A C B is a right angle. The length of hypotenuse A B is 10.3 centimeters, the length of C B is 10 centimeters, and the length of A C is 2.4 centimeters. Angle A B C is x.
Which equation can be used to solve for the measure of angle ABC?

tan(x) = StartFraction 2.4 Over 10 EndFraction
tan(x) = StartFraction 10 Over 2.4 EndFraction
sin(x) = StartFraction 10 Over 10.3 EndFraction
sin(x) = StartFraction 10.3 Over 10 EndFraction

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

Can you me find the missing length. i attached an image.