Gothic Arc Window

Oct 2012
2
0
Canada
The height of a gothic window is 3.64 m and its width is 2.7 m. Determine the radius of the arcs forming the arch.

I know you have to use cos law, but I first found the chord of the window and then found the angle. Then used cos law and used two of the missing numbers as one and solved it out for the variable, but no success


This is another similar question I dont get:
The height of a gothic window is 4.72 m and the radii of the arcs forming the arch are 8.94 m. Determine the width of the arch.
 

chiro

MHF Helper
Sep 2012
6,608
1,263
Australia
Hey Moninder.

Are these arcs circular arcs or some other kind of arc (like an elliptic arc)?
 
Oct 2012
2
0
Canada
Already figured it out, they are circular arcs and I used pythagorus