" The value pf "cos^(2)45^(@)-sin^(2)15^...

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

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

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

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

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

cos 45^@=1/sqrt2 and sin 30^(@)=1/2 . Find the value of cos^(2)45^(@)+sin^(2)30^(@) .

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

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

sin^(2)45^(@)+cos^(2)45^(@)=

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