# math

posted by
**claudia** on
.

Snell's law of refraction can be written as sin i = n sin r, where n is the refractive index from air to water, i is the angle of incidence, and r is the angle of refraction.

In an experiment where a ray of light is directed from air into water, if the angle of incidence is 46 degrees, choose 1 option which gives the angle of refraction predicted by Snell's law, correct to 2 significant figures, given that n = 1.208.

A) 0.84 degrees

B) 0.85 degrees

C) 23 degrees

D) 36 degrees

E) 37 degrees

F) 45 degrees

G) 46 degrees

H) 47 degrees

Can anyone help please?

For Further Reading

math - Reiny, Monday, May 14, 2007 at 12:45pm

have you tried substituting your given values in the given formula?

The correct answer is obtained in one step.

math - HALEY, Monday, May 14, 2007 at 8:22pm

1 STEP

Is the answer E? 37 degree?

yes it is.

36.55º which to 2 significant figures is 37º.