Find `tan^(2)25^(@)-cot^(2)65^(@)`

What is the value of (tan^(2)25^(@))/(cosec^(2)65^(@))+(cot^(2)25^(@))/(sec^(2)65^(@))+tan20^(@)45^(@)tan70^(@) ?

The value of (sin25^(@)cos65^(@)+cos25^(@)sin65^(@))/(tan^(2)27^(@)-cos ec^(2)20^(@))

Find tan15^(@).tan25^(@).tan45^(@).tan65^(@).tan75^(@) .

Without using trigonometric table, evaluate the following: (sin ^(2) 25 ^(@) + sin ^(2) 65^(@))+sqret3 (tan 5 ^(@). Tan15^(@).tan30^(@).tan75^(@).tan85^(@))

What is the value of ( tan^(2) 25^(@) )/( cosec^(2) 65^(@) ) + ( cot^(2) 25^(@) ) /( sec^(2) 65^(@) ) + 2 tan 20^(@) tan 45^(@) tan 70^(@)?

Evaluate: cos^(2)25^(@)-sin^(2)65^(@)-tan^(2)45^(@)

Evaluate the following.(sec^(2)(90-theta)-cot^(2)theta)/(2(sin^(2)25^(@)+sin^(2)65^(@)))-(2cos^(2)60tan^(2)28^(@)tan^(2)62)/(3(sec^(2)43^(@)-cot^(2)47^(@)))

Evaluate: (sec^(2)(90^(@) - theta)-cot^(2) theta)/(2 (sin^(2) 25^(@)+sin^(2) 65^(@)))+(2 sin^(2)30^(@)tan^(2) 32^(@) tan^(2)58^(@))/(3(sec^(2)33^(@)-cot^(2)57^(@))) .

Evaluate : sin^(2)25^(@)+sin^(2)65^(@)+sqrt(3)tan5^(@)tan15^(@)tan30^(@)tan75^(@)tan85^(@)

Evaluate : sin^(2)25^(@)+sin^(2)65^(@)+sqrt(3)tan5^(@)tan15^(@)tan30^(@)tan75^(@)tan85^(@)