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Mathematics, 11.12.2019 06:31 Kizmit1423

Which of the following is not an identity for tan(x/2)
a.
`(1 - cos x)/(sin x)`

b.
`(sin x)/(1 + cos x)`

c.
`(cos x)/(1-sin x)`

d.
`+- sqrt((1 - cosx)/(1 + cos x))`

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Which of the following is not an identity for tan(x/2)
a.
`(1 - cos x)/(sin x)`

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