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

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

Evaluate sin45^(@)+cos45^(@)

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

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

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

Evaluate (cos 45^(@))/(sec 30^(@) + cos 30^(@))

Choose the correct answer in each of the following questions: (cos0^(@)+sin30^(@) +sin45^(@))(sin 90^(@) + cos60^(@)-cos45^(@))=?

Verify each of the following : (i) sin60^(@)cos30^(@)-cos60^(@)sin30^(@)=sin30^(@) (ii) cos60^(@)cos30^(@)+sin60^(@)sin30^(@)=cos30^(@) (iii) 2sin 30^(@)cos30^(@)=sin60^(@) (iv) 2sin45^(@)cos45^(@)=sin90^(@)

What is the value of (sin30^(@)+cos30^(@))/(cos30^(@)-sin30^(@)) ?