If the side opposite of an acute angle in a right triangle is 10 feet and the hypotenuse is 13 feet, what is the measure of the acute angle?

i think the answer is b

we can't see all full 4 options, but if this is the full option, than the very left one is correct:

-2/5 * -3 3/4

remake the question, adding a picture of all the question, or write down the full left and right answers.

this is a good question! i'll do some research and come back when i have the answer!