Posted by Kim on Sunday, April 22, 2012 at 6:19pm.
find the exact value of the given expression. Thank you!
tan(1/2cos^1(9/10)

precalc  bobpursley, Sunday, April 22, 2012 at 7:09pm
tangent of 1/2 the angle whose cosine is 9/10
Exact value? What is wrong with a calculator? Paste this into your google search window...
tan(.5*arccos(9/10))=
Is that exact enough? It appears to be an irrational number.

precalc  kristina, Tuesday, May 1, 2012 at 2:20pm
find the exact value of (5pie/8)
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