Задача 40443.

Two linear antenna, located at a distance of 1 m from each other parallel to the axis Z. The antennas emit coherent electromagnetic waves at a frequency of 150 MHz. What is the difference in antenna radiation phases if the direction of constituting a beam angle of 30 °, there will be a maximum of intensity?

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the decision to write. I try to help.