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

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

tan15^(@)=2-sqrt(3)

Prove that Sin105^(@)=(sqrt(3)+1 )/ (2sqrt(2))=Cos15^(@)

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

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

The value of (sqrt(3)+tan1^(@))(sqrt(3)+tan2^(@))..........(sqrt(3)+tan29^(@))

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

Prove that cos105^(@)=((1-sqrt(3))/(2sqrt(2)))=-Sin15^(@)

sin^(-1)((sqrt(3))/(2))-tan^(-1)(-sqrt(3))

The value of tan^(-1)((sqrt(3))/(2))+tan^(-1)((1)/(sqrt(3))) is equal to a) tan^(-1)((5)/(sqrt(3))) b) tan^(-1)((2)/(sqrt(3))) c) tan^(-1)((1)/(2)) d) tan^(-1)((1)/(3sqrt(3)))