A reciprocal identity and its domain
A reciprocal identity and its domain
5 marks
TGM Original
Prove that 1-costhetasintheta+ sintheta1-costheta=2cosectheta, for angles where the displayed expressions are defined. State the excluded values in 0 <= theta 2pi.
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Answer:Identity proven; excluded values \(0,\pi,2\pi\).
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