cot105^(@)-tan105^(@)=2sqrt(3)

Prove that (i) "cos " 15^(@) - " sin " 15^(@) = (1)/(sqrt(2)) (ii) " cot " 105^(@) - " tan " 105^(@) =2sqrt(3) (iii) (tan 69^(@) + tan 66^(@))/(1-tan 69^(@) tan 66^(@)) =-1

sin105^(@)+cos105^(@)=

Prove that Tan105^(@)=-(2+sqrt(3))=-Cot 15^(@)

Prove that : (i) "sin"105^(@)+cos105^(@)=(1)/(sqrt(2)) (ii) cos105^(@)+cos15^(@)="sin"75^(@)-"sin"15^(@)

The value of cos105^(@)+sin105^(@) is

cot(tan^(-1)sqrt(3))

cot(tan^(-1)sqrt(3))

cos105^(@)+sin105^(@) = …………

Prove that Cot105^(@)=-(2-sqrt(3))=-Tan15^(@)