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[" 8.निम्न A man of caste : "],[sqrt(2)c...

[" 8.निम्न A man of caste : "],[sqrt(2)cos60^(@)cos30^(@)-sin60^(@)sin30^(@)]

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sin60^(@).cos30^(@)+cos30^(@)*sin60^(@)

Evaluate : cos60^(@)cos30^(@)+ sin 60^(@)sin30^(@)

"(1) "sin60^(@)cos30^(@)+sin30^(@)cos60^(@)

Find the value of cos60^(@) cos 30^(@)-sin 60^(@) sin 30^(@)

Prove that : cos30^(@).cos60^(@)-sin30^(@).sin60^(@)=0

Prove that : cos30^(@).cos60^(@)-sin30^(@).sin60^(@)=0

co60^(@)sin30^(@)+cos30^(@)sin60^(@) =___.

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