`cot (15^(@) -A) + tan(15^(@) + A) = `

tan15 ^ (@)

tan15^@ =

cot (A+15^(@))- tan(A-15^(@))=

Show that cot ( A + 15^(@)) - tan (A - 15^(@)) = (4 cos 2 A)/(1 + 2 sin 2 A ) .

tan15^(@) = …………

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

tan15^(@) + tan 75^(@)=

The value of (1- tan 15^(@))/(1 + tan 15^(@))

find x if 3tan(x-15^(@))=tan(x+15^(@))

Show that cot(A+15^(@))-tan(A-15^(@))=(4cos2A)/(1+2sin2A) deduce that cot15^(@)=2+sqrt(3)