Question

what will be the colour of these RVS cops​

Answer 1

Answer:

Let AB be the tower and BC be the length of its shadow when sun’s altitude (angle of elevation from the top of the tower to the tip of the shadow) is 60° and DB be the length of the shadow when the angle of elevation is 30°.



Let us assume, AB = h m, BC = x m

DB = (40 +x) m

In right triangle ABC,

tan 60° = AB/BC

√3 = h/x

h = √3 x……….(i)

In right triangle ABD,

tan 30° = AB/BD

1/√3 =h/(x + 40) ……..(ii)

From (i) and (ii),

x(√3 )(√3 ) = x + 40

3x = x + 40

2x = 40

x = 20

Substituting x = 20 in (i),

h = 20√3

Hence, the height of the tower is 20√3 m.

Answer 2

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Answer:

the colour will be blue