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" (b) "sin(45^(@)+4)-cos(45^(@)-A)=0...

" (b) "sin(45^(@)+4)-cos(45^(@)-A)=0

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

2sin45^(@)cos45^(@)

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The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

sin 45^(@)(cos 45^(@)) =…………..

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

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

Prove that: i) sin(A+B)cos(A-B)-cos(A+B)sin(A-B)=sin2B ii) cos(45^(@)-A)cos(45^(@)-B)-sin(45^(@)-A)sin(45^(@)-B)=sin(A+B)