\

Draw the related diagram.

\

\"\"

\

Consider the height of the pyramid as \"\" and \"\".

\

\"\".

\

\"\".

\

\"\".

\

From \"\" triangle :

\

\"\"

\

\

From triangle \"\":

\

Use the Law of Sines:

\

\"\"

\

\"\"

\

\"\"

\

\"\".

\

From \"\" triangle :

\

\"\"

\

\"\"

\

Substitute \"\".

\

\"\"

\

\"\"

\

Therefore, current height of the Great Pyramid is \"\".

\

\

The current height of the Great Pyramid is \"\".