Use the rule of sines for area:
where A is area
Please help me, I am completely baffled. I need the formula to find the altitude/height of a triangle (in order to calculate the area, b*h/2) based on the lengths of the three sides. Please, someone help me... I really need it. I searched google and couldn't find anything.
If you know the lenghts of the three sides, the area follows from Heron's formula.
I have to admit, I didn't really understand the rule of sines... I think I understand Heron's formula though. So does that mean that a triangle with side lengths of 12, 15, and 7 would have an area of 41.231...?
Thank you so much for your help. Sorry to be a mouse with a cookie but if someone could tell me if the answer I got is right so I can make sure I understood everything I would really appreciate it!