Ocean waves moving at a speed of 4.0 m/s are approaching a beach at an angle of 30^(@) to the normal, as shown in figure. Suppose the water depth changes abruptly at a certain distance from the beach and the wave speed there drops to 3.0 m/s. Close to the angle theta is :

Ocean waves moving at a speed of 4.0 m/s are approaching a beach at an

1.	Ocean waves moving at a speed of 4.0 m/s are approaching a beach at an angle of 30^(@) to the normal, as shown in figure. Suppose the water depth changes abruptly at a certain distance from the beach and the wave speed there drops to 3.0 m/s. Close to the angle theta is :
Answer» `SIN^(-1)(3//4)` `sin^(-1)(1//4)` `sin^(-1)(3//8)` NONE of these Answer :C

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Ocean waves moving at a speed of 4.0 m/s are approaching a beach at an angle of 30^(@) to the normal, as shown in figure. Suppose the water depth changes abruptly at a certain distance from the beach and the wave speed there drops to 3.0 m/s. Close to the angle theta is :

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