[" (a) "root(n)(n*8)*(2)/(3)cot58^(@)tan32^(@)-(5)/(3)tan13^(@)tan37^(@)*tan45*tan53^(@)tan77^(@)=-],[]

Prove that (2)/(3)csc^(2)58^(@)-(2)/(3)cot58^(@)tan32^(@)-(5)/(3)tan13^(@)tan37^(@)tan45^(@)tan53^(@)tan77^(@)

Without using trigonometric tables,evaluate each of the following: (2)/(3)cos ec^(2)58^(@)-(2)/(3)cot58^(@)tan32^(@)-(5)/(3)tan13^(0)tan37^(0)tan45^(@)tan53^(@)tan77^(0)

Prove that : (2)/(3)cosec^2 58^@-(2)/(3) cot 58^@tan 32^@ -(5)/(3)tan 13^@tan 37^@tan 45^@tan 53^@tan 77^@=-1 .

log tan17^(@)+log tan37^(@)+log tan53^(@)+log tan73^(@)=

log tan17^(@)+log tan37^(@)+log tan53^(@)+log tan73^(@)=

What is the value of ( cosec (78^(@) - theta) - sec ( 12^(@) + theta) - tan (67^(@) + theta) + cot (23^(@) - theta) )/( tan 13^(@) tan 37^(@) tan 45^(@) tan 53^(@) tan 77^(@) ) ?

((1+tan13^(@))(1+tan32^(@)))/((1+tan12^(@))(1+tan33^(@))))=

If tan 35^(@) +cot 37^(@) +tan 325^(@)=x tan 53^(@)+ tan 127^(@) then x=

Without using trigonometric tables , evaluate : ((tan20^(@))/(cosec70^(@)))^(2)+((cot20^(@))/(sec70^(@)))^2+2tan 15^(@)tan37^(@)tan53^(@)tan60^(@)tan75^(@)

Without using trigonometric tables , evaluate : ((tan20^(@))/(cosec70^(@)))^(2)+((cot20^(@))/(sec70^(@)))^2+2tan 15^(@)tan37^(@)tan53^(@)tan60^(@)tan75^(@)