Posted by **Brianna** on Sunday, May 13, 2012 at 8:59pm.

2sin(4t)[(cos(3/2)x)(cos(5x/2)-sin((15/4)x)]+x

- trig! please help! -
**bobpursley**, Sunday, May 13, 2012 at 9:02pm
What is the question? Is there an equal sign in the above? Are there two variables, t and x?

- trig! please help! -
**Brianna**, Sunday, May 13, 2012 at 9:07pm
to bobpursely: i need to simplify the expression using trig identities. and no i meant for there to only be x

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