(i) A vertical tower standing on a horizontal plane is surmounted by a vertical flagstaff. At a point 100m away from the foot of the tower, the angle of elevation of the top and bottom of the flagstaff are 54° and 42° respectively. Find the height of the flagstaff. Give your answer correct to nearest metre.


(ii) The marks of 200 students in a test were recorded as follows:
Using graph sheet draw ogive for the given data and use it to find the,
(a) median,
(b) number of students who obtained more than 65% marks
(c) number of students who did not pass, if the pass percentage was 35.

Solution

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