Mathematics
The angle of elevation of the top of a hill from the foot of a tower at B is 50°. The angle of elevation of the top of the tower 100 m high from the foot of the hill at C is 35°.
Find the :
(a) horizontal distance BC between the Hill and the Tower.
(b) height CD of the Hill. (Take tan 50° = 1.20)
(c) time taken by a cyclist to cover the distance BC, cycling at 20 m/sec.
Related Questions
Divide 20 into two parts such that the sum of their squares is 272. The larger of two parts is square of the other. Assuming the smaller part to be ‘x’, form an equation and solve it to find the two parts.
Use a graph paper for this question:
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Marks No. of students 0 - 10 12 10 - 20 20 20 - 30 28 30 - 40 35 40 - 50 29 50 - 60 16 60 - 70 12 70 - 80 8 (Take 2 cm = 10 Marks on one axis and 2 cm = 20 students on the other axis).
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6x3 + x2 - 4x + 1
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Class Frequency 20 - 30 6 30 - 40 9 40 - 50 14 50 - 60 10 60 - 70 7 70 - 80 4