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rachiebaby17
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Homework Statement
A steep cliff west of Lydia's home reflects a 1205 kHz radio signal from a station that is 63 km due east of her home. If there is destructive interference, what is the minimum distance of the cliff from her home? Assume there is a 180° phase shift when the wave reflects from the cliff.
Homework Equations
delta l = (m + .5) * wavelength
delta l = d sin theta
A = l A1 - A2 l
I = I1 + I2 - ( 2 * (square root of I1 * I2))
The Attempt at a Solution
I have no idea how to start, I know I can find the wavelength but unsure how that relates to distance or how to find the distance from that.