" Evaluate: "(sec^(2)54^(@)-cot^(2)36^(@))/(cosec^(2)57^(@)-tan^(2)33^(@))-2sin^(2)38^(@)*sec^(2)52^(@)-sin^(2)45^(@)

Without using trigonometric tables,evaluate each of the following: (sec^(2)54^(0)-cot^(2)36^(@))/(cos ec^(2)57^(0)-tan^(2)33^(0))+2sin^(2)38^(@)sec^(2)52^(0)-sin^(2)45^(@)

Evaluate "cosec"^(2)57^(@)-tan^(2)33^(@) .

Evaluate "cosec"^(2)57^(@)-tan^(2)33^(@) .

Evaluate : (sec^(2)theta-cot^(2)(90^(@)-theta))/("cosec"^(2)67^(@)-tan^(2)23^(2))+(sin^(2)40^(@)+sin^(2)50^(@))

Evaluate : (sec^(2)theta-cot^(2)(90^(@)-theta))/("cosec"^(2)67^(@)-tan^(2)23^(2))+(sin^(2)40^(@)+sin^(2)50^(@))

Without using Trigonometric Tables evaluate the following :- (sec^2 54^@-cot^2 36^@)/(cosec^2 57^@-tan^2 33^@) +2sin^2 38^@ sec^2 52^@-sin^2 45^@ .

Evaluate (sec^2""54^@-cot^2""36^@)/(cosec^2""57^@-tan^2""33^@)+2sin^2""38sec^2""52^@-sin^2""45^@+2/sqrt3tan17^@tan60^@tan73^@

Calculate : sin^(2)45^(@)-"cosec"^(2)60^(@)+sec^(2)30^(@) .

Evaluate : ((sec^(2)27^@-cot^(2) 63^@) +(sin^(2) 52^(@)+sin^(2) 38^@))/((cosec^(2) 34^(@)-tan^(2) 56^(@)) +tan 10^@.tan 20^@ .tan 30^@.tan 70^@. Tan 80^@)

Without using trigonometric tables, evaluate each of the following: (sec^2 54^0-cot^2 36^0)/(cos e c^2 57^0-tan^2 33^0)+2sin^2 38^0sec^2 52^0-sin^2 45^0