11.
A tower stands at a point Q on the ground. The angle of elevation of the top of the tower from a point
R which is south of Q is 60°. The angle of elevation of the top of the tower from a point S to the west
of R is 30°. If the height of the tower is 10 m, then find the distance between the points S and R.
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Step-by-step explanation:
is it from heights and distance
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