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Simplify sin(A+45^(@))sin(A-45^(@))....

Simplify `sin(A+45^(@))sin(A-45^(@))`.

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

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

2sin45^(@)cos45^(@)

sin45^(@) =___.

sin 45^(@)(cos 45^(@)) =…………..

Value of sin(45^@+x)+sin(45^@-x)=

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

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

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

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