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16 ounces in a pound
2.40 for 3 ounces
16 divided by 3 = 5.333
12.8
Approx $12.80 for 1 pound of cinnamon
2.40 for 3 ounces
16 divided by 3 = 5.333
12.8
Approx $12.80 for 1 pound of cinnamon
Answer:
see explanation
Step-by-step explanation:
using the identity
cos2a = 2cos²a - 1 , then
cos2a
= 2[ (a +
) ]² - 1
= 2 [ (a² +
+ 2) ] - 1
= (a² +
) + 1 - 1
= (a² +
) ← thus verified