STS Messages 5 Reaction score 0 Thread starter Mar 25, 2019 #1 ABC is a triangle. AC=4cm; AB=3cm; A=60 degrees. I need help finding the area of triangle ABC.
MathProfessor Messages 5 Reaction score 0 Mar 25, 2019 #2 Can you calculate the height from point C ?
MarkFL Gold Member MHB Messages 13,284 Reaction score 12 Mar 25, 2019 #3 If you know the lengths of two sides of a triangle (we'll call them \(a\) and \(b\)), and the angle \(\theta\) subtended by the two sides, then the area \(A\) of the triangle is given by: $$A=\frac{1}{2}ab\sin(\theta)$$ Can you proceed?
If you know the lengths of two sides of a triangle (we'll call them \(a\) and \(b\)), and the angle \(\theta\) subtended by the two sides, then the area \(A\) of the triangle is given by: $$A=\frac{1}{2}ab\sin(\theta)$$ Can you proceed?