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

Prove that Tan15^(@)=2-sqrt(3)=Cot 75^@

If tan15^(@)=2-sqrt(3) then value of tan15^(@)cot75^(@)+tan75^(@)cot15^(@) is

If tan15^(@)=2-sqrt(3) , the value of tan15^(@)cot75^(@)+tan75^(@)cot15^(@) is

If tan 15^(@) = 2 - sqrt(3) , then show that 2 tan 1095^(@) + cot 975^(@) + tan (-195^@) = 4 - 2sqrt(3) .

Suppose that neither A-15^(@) nor A-75^(@) is an integral multiple of 180^(@) . Then prove that cot(15^(@)-A)+tan(15^(@)+A)=(4cos2A)/(1-2sin2A) and deduce that tan 15^@)=2-sqrt(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

The angles of elevation of the top of a tower form two points A and B lying on the horizontal through the foot of the lower are respectively 15^@ and 30^@ . If A and B are on the same side of the tower and AB = 96 metre, then the height of the tower is : (tan15^@ = 2-sqrt3)

Prove that Cot15^(@)=2+sqrt(3)=Tan75^(@)