| http://www.w3.org/ns/prov#value | - I am not very sure how to put in symbols such as pie, etc. so I apologize in advance for having to write it out. :o *Using a sum/difference formula, find the exact value of tan pie/12. *Simplify/evaluate to find the exact value of 1-2sinsquared15 degrees. *Verify (sinx-cosx)squared= 1-sin2x.
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