How. (Cosa- sina) (cosa-sina) =cosa-sina
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Answer:The Answer will be (cosa-sina)^2 not cosa-sina
Step-by-step explanation:
= (cosa-sina)(cosa-sina)
= cos^2a - cosasina
-cosasina + sin^2a
= cos^2a -2cosasina +sin^2a
= (cosa-sina)^2
doglover85:
v. True
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