Question

write tan theta in terms of powers of theta​

Answer 1

Answer:

I know there are standard techniques to expand sinnθ and cosnθ (n∈N) in terms of sines and cosines of multiples of θ.

We take a complex number z=cosθ+isinθ. Then

coskθ=12(zk+1zk)

where k∈N and

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