Part A Sound with frequency 1230 Hz leaves a room through a doorway with a width of 1.03 m . At what minimum angle relat

[answerhappygod]

Part A
Sound with frequency 1230 Hz leaves a room through a
doorway with a width of 1.03 m . At what minimum angle
relative to the centerline perpendicular to the doorway will
someone outside the room hear no sound? Use 344 m/s for
the speed of sound in air and assume that the source and listener
are both far enough from the doorway for Fraunhofer diffraction to
apply. You can ignore effects of reflections.
Express your answer in radians.