Solution
Solution
+1
Solution steps
Rewrite using trig identities:
Use the following trivial identity:
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Frequently Asked Questions (FAQ)
What is the value of sin((6pi)/7)cos((11pi}{21})-cos((6pi)/7)sin(\frac{11pi)/(21)) ?
The value of sin((6pi)/7)cos((11pi}{21})-cos((6pi)/7)sin(\frac{11pi)/(21)) is (sqrt(3))/2