DollyDagger
Technical User
Hi all,
I'm trying to create a excel spreadsheet to find the area of some isocseles triangles (Not homework u understand!). anyway i need to find an angle in each triangle, and the help file doesnt tell me how to do inverse cosine (Cos^-)which i need to find an angle (using "(invCos(a+b-SinC))/(2(2(ab)"
Also any ideas how i could increment the values of the triangle's sides for a scalene triangle? Im using 2 equal values with a +1 incrementation and the base side with a -2 incrementation for the isoceles trinagle (the problem says that the sides must add up to 1000).
Any help much appreciated! Thanks. "I didn't do it"
I'm trying to create a excel spreadsheet to find the area of some isocseles triangles (Not homework u understand!). anyway i need to find an angle in each triangle, and the help file doesnt tell me how to do inverse cosine (Cos^-)which i need to find an angle (using "(invCos(a+b-SinC))/(2(2(ab)"
Also any ideas how i could increment the values of the triangle's sides for a scalene triangle? Im using 2 equal values with a +1 incrementation and the base side with a -2 incrementation for the isoceles trinagle (the problem says that the sides must add up to 1000).
Any help much appreciated! Thanks. "I didn't do it"