Question

2
ence,
EXERCISE 20
1 An electric pole is 10 metres high. If its shadow is 1073 metres in length, find the
elevation of the sun.
2 The angle of elevation of the top of a tower, from a point on the ground and at a
distance of 150 m from its foot, is 30°. Find the height of the tower correct to one place
of decimal.
3 A ladder is placed against a wall such that it just reaches the top of the wall. The foo
of the ladder is 1.5 metres away from the wall and the ladder is inclined at an angl
of 60° with the ground. Find the height of the wall.
4 What is the angle of elevation of the sun when the length of shadow of a vertical pol
is equal to its height?
5 A river is 60 m wide. A tree of unknown height is on one bank. The angle of elevatio-
of the top of the tree from the point exactly opposite to the foot of the tree, on th
other bank, is 30°. Find the height of the tree.
From a point P on level ground, the angle of elevation of the top of a tower is 30°.
the tower is 100 m high, how far is P from the foot of the tower?
542 Understanding ICSE Mathematics - X​

Answer 1

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Step-by-step explanation:

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