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" (ii) "tan5^(@)tan25^(@)tan30^(@)tan30^...

" (ii) "tan5^(@)tan25^(@)tan30^(@)tan30^(@)tan65^(@)tan85^(@)

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tan20^(@)tan30^(@)tan40^(@)tan80^(@)=1

Evaluate: tan5^(@)tan25^(@)tan30^(@)tan65^(@)tan85^(@)

Evaluate each of the following: cot12^(@)cot38^(@)cot52^(@)cot60^(@)cot78^(@)tan5^(@)tan25^(@)tan30^(@)tan65^(@)tan85^(@)

Prove that (tan25^(@)-tan35^(@)+tan85^(@))/(tan25^(@)tan35^(@)tan85^(@))=3

Identify the correct statement/s tan20^(@)+tan25^(@)+tan35^(@)=tan20^(@)tan25^(@)tan35^(@)

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^(@)

Evaluate : 2((cos65^(@))/(sin25^(@)))-(tan20^(@))/(cot70^(@))-sin90^(@)+tan5^(@)tan35^(@)tan60^(@)tan55^(@)tan85^(@)

Evaluate : 2((cos65^(@))/(sin25^(@)))-(tan20^(@))/(cot70^(@))-sin90^(@)+tan5^(@)tan35^(@)tan60^(@)tan55^(@)tan85^(@)

Prove that, tan25^(@).tan15^(@)+tan15^(@)tan50^(@)+tan25^(@)tan50^(@)=1 .