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August 27, 2014

August 27, 2014

Posted by **Phil-- HELP NEEDED ASAP** on Friday, May 10, 2013 at 9:46am.

sin(3π/4+5π/6)

I've done:

sin(9π/12 + 10π/12)

=sin(19π/12)

What do I do now? Im confused if that would just be the answer or what? Wouldnt the answer be numerical?

- Pre-Calc : Find the Exact Value of the Expression -
**Steve**, Friday, May 10, 2013 at 10:57amsin(19π/12) = sin(3π/2 + π/12) = -cos(π/12)

Now use the half-angle formula to evaluate that.

- Pre-Calc : Find the Exact Value of the Expression -
**Phil-- HELP NEEDED ASAP**, Friday, May 10, 2013 at 12:06pmThank you!

- Pre-Calc : Find the Exact Value of the Expression -
**Anonymous**, Saturday, March 22, 2014 at 5:25pmtan(-15)

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