SOLUTION: Use the sum-to-product formula to rewrite sin6z-sin3z as a product. sin6z-sin3z=?

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Question 452009: Use the sum-to-product formula to rewrite sin6z-sin3z as a product.
sin6z-sin3z=?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Use the sum-to-product formula to rewrite sin6z-sin3z as a product.
sin6z-sin3z
= 2cos[6z+3z}/2*sin(6z-3z)/2
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= 2cos(9z/2)*sin(3z/2)
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To see formulas Google "trigonometry sum to product formulas".
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Cheers,
Stan H.
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