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" Show that "sin^(2)45^(@)-sin^(2)15^(@)...

" Show that "sin^(2)45^(@)-sin^(2)15^(@)=(sqrt(3))/(4)" (Marcl "

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Prove that, cos^(2)45^(@)-sin^(2)15^(@)=sqrt(3)/(4)

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cos^(2) 45^(@) - sin^(2) 15^(@)=

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The value of cos^(2)45^(@)-sin^(2)15^(@) is

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Find the value of sin^(2) 45^(@) - sin^(2) 15^(@)

The value of cos ^(2)45^(@) - sin^(2)15^(@) is