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a. Write the double-angle identity: cos 20=2cos20-1 b. Make the substitution = =. C. Solve for costo obtain the half-angle identity for cosine. d.
a. Write the double-angle identity: cos 20=2cos20-1 b. Make the substitution = =. C. Solve for costo obtain the half-angle identity for cosine. d. Repeat steps a - c, starting with cos 20-1-2sin20, to obtain the half-angle identity for sine.
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Elements Of Chemical Reaction Engineering
Authors: H. Fogler
6th Edition
013548622X, 978-0135486221
