You must get from a point p on the straight shore of a lake to a stranded swimmer who is 70 m from a point q on the shore that is 70 m from you.
a) You must get from a point p on the straight shore of a lake to a stranded swimmer who is 70 m from a point q on the shore that is 70 m from you.
b) You must get from a point p on the straight shore of a lake to a stranded swimmer who is 70 m from a point q on the shore that is 70 m from you.
c) You must get from a point p on the straight shore of a lake to a stranded swimmer who is 70 m from a point q on the shore that is 70 m from you.
d) You must get from a point p on the straight shore of a lake to a stranded swimmer who is 70 m from a point q on the shore that is 70 m from you.