Question

EXPND AND DERIVE COS9THETA IJTERMS OF COS THETA​

Answer 1

Answer:

ZERO

Step-by-step explanation:

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Answer 2

Answer:

The De Movre's fomula and the compound indentities can be used to expand sin nΘ and cos nΘ into the powers of cos Θ and sinΘ, where n is an integer[1]. ... The general formula of the expansion of cos nΘ and sin nΘ is obtain from the formulas of the co- efficients.