Question: (a) Prove that where a = -tan 1/2 θ and b = sin θ. (b) Is the factorization valid for all values of θ? (c)

(a) Prove that
(a) Prove that where a = -tan 1/2 θ and b

where a = -tan 1/2 θ and b = sin θ.
(b) Is the factorization valid for all values of θ?
(c) Interpret the factorization geometrically.

cos sin -sin cos

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