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If t a nbeta=(ns inalphacosalpha)/(1-ns ...

If `t a nbeta=(ns inalphacosalpha)/(1-ns in^2alpha)` , show that `tan(alpha-beta)=(1-n)t a nalphadot`

A

`n tan alpha `

B

`(1-n) tan alpha`

C

`(1+ n) tan alpha `

D

`(tan alpha)/(n)`

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The correct Answer is:
B
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS OF COMPOUND ANGLES -COMPETITIVE THINKING
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