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cot. (pi)/(20) cot. (3pi)/(20) cot. (5pi...

`cot. (pi)/(20) cot. (3pi)/(20) cot. (5pi)/(20) cot. (7pi)/(20) cot. (9pi)/(20) cot. (15pi)/(20)=`

A

1

B

-1

C

`sqrt(3)`

D

`-sqrt(3)`

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AAKASH SERIES-TRIGONOMERTIC RATIOS-EXERCISE - I
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  17. If x=a cos^(3) theta , y= a sin^(3) theta then

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