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The value of cos^(2)75^(@)+cos^(2)45^(@)...

The value of `cos^(2)75^(@)+cos^(2)45^(@)+cos^(2)15^(@)-cos^(2)30^(@)-cos^(2)60^(@)` is

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The value of sin^(2)30^(@)cos^(2)45^(@)

cos^(2)75^(0)+cos^(2)15^(0)-cos75^(0)cos15^(0)=

Evaluate: sin^(2)60^(@) cos^(2)45^(@) cos^(2)60^(@)" cosec"^(2)90^(@)

The value of (cos^(2)60^(@)+4sec^(2)30^(@)-tan^(2)45^(@))/(sin^(2)30^(@)+cos^(2)30^(@)) is

cos^(2)5^(@) +cos^(2)10^(@) + cos^(2) 15^(@) +…..+cos^(2) 85^(@) + cos^(2) 90^(@) is equal to

Evaluate sin^(2)45^(@)+cos^(2)60^(@)+cosec^(2)30^(@) .

The value of sin^(2)30^(@).cos^(2)45^(@)+2tan^(2)30^(@)-sec^(2)60^(@) is equal to :

cos^(2)30^@-sin^(2)30^@=cos60^@