In triangle ABC, angle C = 20 angle B = 115 height BH is 8 cm Find HA?
| February 12, 2021 | education
When 1 mol of ethanol is burned, 1374 kJ of heat is released. Calculate how much heat will be released when burning 115 g of alcohol.
The sum of the inner triangles is 180, then the angle BAC = (180 – ABC – ACB) = (180 – 115 – 20) = 45.
Since ВН is the height of the triangle, then the AВН triangle is rectangular, and since the angle ВAН = 45, then the triangle is also isosceles, HA = ВH = 8 cm.
Answer: The length of the segment AH is 8 cm.
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