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A =(cos 9^(@) - sin 9^(@))/(cos 9^(@) + ...

`A =(cos 9^(@) - sin 9^(@))/(cos 9^(@) + sin 9^(@)) , B = (cos 21^(@) + sin 21^(@))/(cos21^(@) -sin21^(@))` and `C= tan 20^(@) + tan40^(@) + sqrt(3)tan20^(@) tan40^(@)` then descending order is:

A

A,B,C

B

B,C,A

C

C,A,B

D

C,B,A

Text Solution

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The correct Answer is:
B
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