" Value of "cos0^(@).cos30^(@)*cos45^(@)*cos60^(@)*cos90^(@)" is "

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

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

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

Evaluate cos45^(@)cos30^(@)+sin45^(@)sin30^(@) .

Evaluate cos45^(@)cos30^(@)+sin45^(@)sin30^(@) .

find the value of sin60^(@)cos30^(@)+sin30^(@)cos60^(@)

The value of cos10^@ cos30^@ cos50^@ cos70^@ cos90^@ is: cos10^@ cos30^@ cos50^@ cos70^@ cos90^@ का मान है :

Show that (i) cos60^(@)*cos30^(@)-sin60^(@)*sin30^(@)=cos90^(@) (ii) cos60^(@)=1-2sin^(2)30^(@)=2cos^(2)30^(@)-1 (iii) (tan60^(@)-tan30^(@))/(1+tan60^(@)*tan30^(@))=tan30^(@)

The value of (cos 30^(@)+isin 30^(@))/(cos 60^(@)-isin 60^(@)) is equal to

Find the value of (sin30^(@))/(cos^(2)45^(@))-tan^(2)60^(@)+3cos90^(@)+sin0^(@) .