Tiara wants to know the width of the given river. While doing so, she stands on the edge of the river and look straight across to a point on the other edge without changing the inclination of the neck and head. She turns side ways until the vision is in line with a point on the side of the stream. From the above description, find the value of QR.

Tiara wants to know the width of the given river. While doing so, she

1.	Tiara wants to know the width of the given river. While doing so, she stands on the edge of the river and look straight across to a point on the other edge without changing the inclination of the neck and head. She turns side ways until the vision is in line with a point on the side of the stream. From the above description, find the value of QR.
A.	25 units
B.	12 units
C.	15 units
D.	Can't be determined
Answer» D. Can't be determined

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