Value of `cosec^2 67^(@) - tan^2 23^(@)` is

What is the value of (cos^(2)67^(@)-sin^(2)23^(@))?

( Sec^2 theta - cot ^2 (90 - theta))/( cosec ^2 67^@ - tan ^2 23^@) + sin ^2 40 ^@ + sin ^2 50^@ is equal to

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

What is the value of "cosec"^(2) 68^(@) + sec^(2)56^(@) - cot^(2)34^(@) - tan^(2)22^(@) ?

What is the value of cosec (65^(@) + theta) - sec(25^(@) - theta) + tan^(2) 20^(@) - cosec^(2) 70^(@) ?

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^(@) ) ?

The value of (cosec^2 30^@ sin^2 45^@ +sec^2 60^@)/(tan60^@ cosec^2 45^@- sec^2 60^@ tan45^@) is: (cosec^2 30^@ sin^2 45^@ +sec^2 60^@)/(tan60^@ cosec^2 45^@- sec^2 60^@ tan45^@) का मान है:

Find the value of ("cosec"^(2)A-1)*tan^(2)A .