Using the formula `tanA = (sin 2 A)/(1 + cos 2 A),"find the values of " tan75^(@) " and " cot 22^(@) 30`

Find the value of tan 75^(@) + cot 75^(@)

Using the identity tan A =(sin 2A)/(1+cos2A) find the value of tan 15^(@) and tan 75^(@) and hence solve that the equation sec^(2) theta= 4 tan theta .

Using the formula, tan 2A = (2tanA)/(1-tan^2A) , find the value of tan 60^@ , it being given that tan 30^@ =1/sqrt3

The value of tan75^(@)-cot75^(@) is

Find the value of, cos [tan^(-1) {sin (cot^(-1)x)}]

S.T tan alpha =(sin 2 alpha )/(1+cos 2 alpha ) . Hence find the value of tan 15^(@) and tan 22 1//2^(@)

Find the values of the following : Tan75^(@)+cot75^(@)

Find the values of sin75^(@), cos75^(@), tan75^(@) and cot75^(@) .

Find the value of 2 tan 30^@ + (cos 45^@)/ (2 cot 45^@)

Using the formula, sinA=sqrt((1-cos2A)/(2)) , find the value of sin30^(@) , it being given that cos60^(@)=(1)/(2) .