SOLUTION: Sin45/2

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Question 1091919: Sin45/2
Answer by ikleyn(52803) About Me  (Show Source):
You can put this solution on YOUR website!
.
sin%2845%5Eo%2F2%29 = sqrt%282-sqrt%282%29%29%2F2.

See the lessons
    - Trigonometric functions of half argument - Examples
    - Miscellaneous Trigonometry problems
in this site.


Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic  "Trigonometry. Formulas for trigonometric functions".