Question 979415
Did this mean nothing?
<a href="http://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.979410.html">http://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.979410.html</a>


Follow the <b>formula</b> exactly as it is formed.  The given expression shows everything you need.  Nothing more than substitution and a little arithmetic is needed. 



:
{{{highlight(removed)}}}