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its correct.Sure :
5a)
its easier if u convert the angle in radian ie multiply by (π/180°) ----> 60° = π/3 rads.
n c this --->
thts whr the new wave will start!
So it would look like :
Correct me if it is wrong. ZaqZainab Suchal Riaz
the new wave will have phase difference of 60 degree. which means that 1/6 of the one wavelength. which means one big block of 10 small blocks.
and the new amplitude will be √(2) of A.
which is almost 0.7a