[" (a) Prove that: "],[" (i) tan "15^(@)+cot15^(@)=4]

tan15^(@)-cot15^(@)=

Prove that (tan75^(@))/(cot15^(@))=1

Show that tan 15^@ + cot 15^@ = 4

Prove that: tan75^(@)+cot75^(0)=4

Find tan 15^(@) and hence show that tan 15^(@) + cot 15^(@) =4 .

Prove that (i) " sin " 75^(@) =((sqrt(6)+sqrt(2)))/(4) (ii) (cos 135^(@) -cos 120^(@))/(cos 135^(@) +cos 120^(@)) =(3 -2sqrt(2)) (iii) " tan " 15^(@) +" cot " 15^(@) =4

Prove that : tan 75^@+ cot 75^@=4 .

Find tan15^(@) and hence show that tan15^(@)+cot15^(@)=4

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

Prove that tan 9 ^(@) - tan 27 ^(@)- cot 27 ^(@) + cot 9^(@)=4