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Q:

If the angle of elevation of the sun changes from 30to 45o then length of the shadow of a pillar decreases by 20 meters. The height of the pillar is:

  • 1
    $$ {20(\sqrt{3}-1)}\ meter$$
  • 2
    $$ {20(\sqrt{3}+1)}\ meter$$
  • 3
    $$ {10(\sqrt{3}-1)}\ meter$$
  • 4
    $$ {10(\sqrt{3}+1)}\ meter$$
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  • Workspace

Answer : 4. "$$ {10(\sqrt{3}+1)}\ meter$$"

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