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Zero to the power of zero

It is determined by definition that 0⁰ ≝ 1, also applies aswell sin⁰0 = 1.

 

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Explanation

The formula for calculating the cosine of multiples reads

We take n = 0 and find that the formula shows cos (0) = 1

This result arises here as we have taken sin⁰0 = 1, because

 

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