[spec] corrections in double angle formulas

diff --git a/spec/circ.pdf b/spec/circ.pdf
index 4f0cd6684892577815600400a32e5cd5a1a10076..bb10a7f885ffb7257115d76d3bcedaafa262ae9f 100644 (file)
Binary files a/spec/circ.pdf and b/spec/circ.pdf differ