If \text{\cos}\theta={\text{\cos}\alpha-\text{\cos}\beta}/{1-\text{\cos}\alpha\text{\cos}\beta} then one of the values of \text{\tan}(\theta/2) is

Correct Answer is : cotβ2tanα2

\text{\cot}\beta/2\text{\tan}\alpha/2

\text{\tan}\alpha\text{\tan}\beta/2

\text{\tan}\beta/2\text{\cot}\alpha/2

\text{\tan}^2\alpha/2\text{\tan}^2\beta/2

AP EAMCET Engineering 2016 Code C Paper

Section: Mathematics

Question : 75 of 160

Marks: +1, -0

If cosθ=

cosα−cosβ

1−cosαcosβ

then one of the values of tan(

) is

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