Area of a Triangle. A formula for finding the area of a triangle when given the measures of the angles and one side is area =

,where a is the length of the side opposite angle A. If the measures of angles B and C are 13 °and 71° , respectively, and if a = 9 feet, use the appropriate product-to-sum identity to change the formula so that you can solve for the area of a triangle. Round your answer to two decimal places.

Question

Area of a Triangle. A formula for finding the area of a triangle when given the measures of the angles and one side is area =
  
,where a is the length of the side opposite angle A. If the measures of angles B and C are 13 °and 71° , respectively, and if a = 9 feet, use the appropriate product-to-sum identity to change the formula so that you can solve for the area of a triangle. Round your answer to two decimal places.

Quizplus · Accepted Answer

The Answer of Area of a Triangle. A formula for finding the area of a triangle when given the measures of the angles and one side is area =
  
,where a is the length of the side opposite angle A. If the measures of angles B and C are 13 °and 71° , respectively, and if a = 9 feet, use the appropriate product-to-sum identity to change the formula so that you can solve for the area of a triangle. Round your answer to two decimal places.