At a distance of 120ft from the foot of a tower – McqOptions

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1.	At a distance of 120ft from the foot of a tower the elevation of its top is 60o. If the possible error in measuring the distance and elevation are 1 inch and 1 minute, find approximate error in calculated height.
A.	0.342
B.	0.284
C.	0.154
D.	0.986
Answer» C. 0.154

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