Cosine is 0.5.
http://wiki.answers.com/Q/What_is_the_cosine_of_a_...

A forty five degree angle is one half of a right angle. And it is one equal angles of an isosceles right triangle. It is also a construction measurement for cornices.
http://www.ask.com/webanswers/Reference/Other/wha...

1. Thread sewing machine with matching thread. Place quilted quilt top on the machine and staystitch the top edge of the quilt through all layers. Trim the batting so that the edge
http://www.ehow.com/how_8661667_bindquilt60degre...

If you mean what is the combination of 60 degrees and 30 degrees, t...
http://www.chacha.com/question/whatisthemeasure...
