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" (iii) "4cot^(2)45^(@)-sec^(2)60^(@)+si...

" (iii) "4cot^(2)45^(@)-sec^(2)60^(@)+sin^(2)30^(@)=(1)/(4)

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prove that: 4cot^(2)(45^(@))-sec^(2)(60^(@))+sin^(2)(30^(@))=(1)/(8)

Evaluate each of the following :- (cosec^(2)45^(@)sec^(2)30^(@))(sin^(2)30^(@)+4cot^(2)45^(@)-sec^(2)60^(@))

Evaluate each of the following : (sin^(2)+30^(@)+4cot^(2)45^(@)-sec^(2)60^(@))(cosec^(2)45^(@)sec^(2)30^(@))

Evaluate : (sin^(2)30^(@)+sin^(2)45^(@)-4cot^(2)60^(@))/(2sin30^(@)cos30^(@)+(1)/(2)tan60^(@))

Evaluate : (sin^(2)30^(@)+sin^(2)45^(@)-4cot^(2)60^(@))/(2sin30^(@)cos30^(@)+(1)/(2)tan60^(@))

Calculate : 3tan^(2)45^(@)-sin^(2)60^(@)-(1)/(3) cot^(2)30^(@)-(1)/(8) sec^(2)45^(@) .

Calculate : sec^(2)45^(@)-cot^(2)45^(@)-sin^(2)30^(@)-sin^(2)60^(@) .

The value of (sec^(2)45^(@)-cot^(2)45^(@))-(sin^(2)30^(@)+sin^(2)60^(@)) is