求高人解英文的三角函数题!A fence post is located 54 feet from one corner
求高人解英文的三角函数题!
A fence post is located 54 feet from one corner of a building and 39 feet from the adjacent corner.Fences are put up between the post and the building corners to form a triangular garden area.The 39-foot fence makes a 54° angle with the building.How long is the building wall?
A fence post is located 54 feet from one corner of a building and 39 feet from the adjacent corner.Fences are put up between the post and the building corners to form a triangular garden area.The 39-foot fence makes a 54° angle with the building.How long is the building wall?
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