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# Trigonometry help Watch

A, B and C are three points which lie in a straight line on horizontal ground.

The angle of elevation of T from A is 21.5.
The angle of elevation of T from C is 13.3.
AC = 1200 m.
Calculate the height of the tower.
2. you could try breaking the base edge down into b and 1200-b
then you can get two equations with two unknowns (b and the height of the tower)
3. Break it down into B and 1200-b and use Tan with the respective angles to find the unknown.

Updated: May 3, 2012
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