Solve the Problem $\frac { \mathrm { I } _ { \mathrm { W } } } { \mathrm { I } _ { \mathrm { a } } } = \frac { \sin \mathrm { A } } { \sin \mathrm { W } }$

question 125

Multiple Choice

Solve the problem.
-The index of refraction for air, Ia, is 1.0003. The index of refraction for water, Iw, is 1.3. If $\frac { \mathrm { I } _ { \mathrm { W } } } { \mathrm { I } _ { \mathrm { a } } } = \frac { \sin \mathrm { A } } { \sin \mathrm { W } }$ , and $\mathrm { A } = 31.5 ^ { \circ }$ , find $\mathrm { W }$ to the nearest tenth.

• A) \(22.7 ^ { \circ }\)
• B) \(23.7 ^ { \circ }\)
• C) \(21.7 ^ { \circ }\)
• D) \(20.7 ^ { \circ }\)

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