Light in an optical fiber approaches the glass-air boundary at a 60-degree angle so that it is totally internally reflected. At what angle does the light reflect back into the optical fiber? The refractive index of the optical fiber is 1.45. Give your answer as a whole number to the nearest degree.

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

step-by-step explanation: