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" (xili) "(sqrt(3))/(sin20^(@))-(1)/(cos...

" (xili) "(sqrt(3))/(sin20^(@))-(1)/(cos20^(@))=4

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(sqrt3)/(sin(20^@))-1/(cos(20^@))=

sqrt3 cosec 20^(@) -sec 20^(@)= (sqrt3)/(sin(20^(@)))-(1)/(cos (20^(@)))=

Show that sqrt3/(sin20^@)-1/(cos20^@)=4

Prove that, sqrt3/(sin 20^(@))-1/(cos 20^(@))=4

sqrt3 cot20^(@)-4cos20^(@)=

4cos20^(@)-sqrt(3)cot20^(@)

sqrt(3)cot20^(@)-4cos20^(@)=

If (1)/(sin20^(@)) + (1)/(sqrt(3)cos20^(@)) = 2kcos40^(@) , then 18k^(4) + 162k^(2) + 369 is divisible by

If (1)/(sin20^(@)) + (1)/(sqrt(3)cos20^(@)) = 2kcos40^(@) , then 18k^(4) + 162k^(2) + 369 is divisible by

If (1)/(sin20^(@)) + (1)/(sqrt(3)cos20^(@)) = 2kcos40^(@) , then 18k^(4) + 162k^(2) + 369 is divisible by (A) 345 (B) 349 (C) 347 (D) 5