cos(45^(@)-A)cos(45^(@)-B)-sin(45^(@)-A)sin(45^(@)-B)=sin(A+B)

sin(45^@+A)sin(45^@-A)=

cos 45^(@)-sin 45^(@)=?

Show that sin(45^@+A)cos(45^@-B)+cos(45^@+A)cos(45^@-B)=cos(A-B)

2sin45^(@)cos45^(@)

sin^(2)45^(@)+cos^(2)45^(@)=

( cos (45^(@) + A) - cos (45^(@) - A))/( sin (120^(@) + A)-sin(120^@-A))=

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

sin 45^(@)(cos 45^(@)) =…………..

If A=sin 44^(@)+cos44^(@), B=sin45^(@)+ cos45^(@) and C= sin46^(@)+cos 46^(@) . Then, correct option(s) is/are

If A=sin 44^(@)+cos44^(@), B=sin45^(@)+ cos45^(@) and C= sin46^(@)+cos 46^(@) . Then, correct option(s) is/are