What is the red angle if the green and blue angles are known and the yellow angles are equal in the following image:
Edit: What's the formula for figuring out the red angle?
What is the red angle if the green and blue angles are known and the yellow angles are equal in the following image:
Edit: What's the formula for figuring out the red angle?
Let $R,G,B,Y$ be red, green, blue, yellow respectively. Then
$$R+\pi = B+Y, \quad B = Y + G.$$
Rearrange to represent $R$ in $B$ and $G$ only.