The angle of elevation of the top P of a...

The angle of elevation of the top P of a tower from the feet of one person standing due South of the tower is `45^@` and from the feet of another person standing due west of the tower is `30^@`. If the height of the tower is 5 meters, then the distance (in meters) between the two persons is equal to

`5sqrt5`

`5/2 sqrt2`

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