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" a- value "y cos0" : "cos30^(@)" .Cos "...

" a- value "y cos0" : "cos30^(@)" .Cos "45^(@)" : "cos60^(@).cos90^(@)

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Value of cos0^(@). Cos 30^(@) . cos45^(@) . cos60^(@) . Cos90^(@) is __________.

Value of cos0^(@). Cos 30^(@) . cos45^(@) . cos60^(@) . Cos90^(@) is __________.

The value of sin 0^(@) + cos 30^(@) - tan 45^(@) + cosec 60^(@) + cot 90^(@) is equal to

cos30^(@)sin60^(@)+cos60^(@)sin30^(@)= ……………………

The value of cos0^@ cos30^@ cos45^@ cos60^@ cos 90^@ is: cos0^@ cos30^@ cos45^@ cos60^@ cos 90^@ का मान क्या होगा ?

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

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

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

The value of (cos 0^(@) + sin 45^(@) + sin 30^(@)) (sin 90^(@) - cos 45^(@) + cos 60^(@)) is