" 16).The value of "cos45^(@)" is "

The value of sin 45^@+cos45^@ is

The value of ((cos 45^(@) + isin 45^(@))^(2) (cos 30^(@) - isin 30^(@)))/(cos 30^(@) + isin 30^(@)) is

The value of sin45^(@)+cos45^(@) is :

Find the value of cos 45^(@) + sin 45^(@)

The value of cos45^(@)-sin45^(@) will be :

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

Find the value of (sin45^(@) + cos 45^(@))

What is the value of |{:(cos 15^(@),sin 15^(@)),(cos 45^(@),sin 45^(@)):}|xx|{:(cos 45^(@),cos 15^(@)),(sin 45^(@),sin 15^(@)):}| ?