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" (i) "sin105^(@)+cos105^(@)=cos45^(@)...

" (i) "sin105^(@)+cos105^(@)=cos45^(@)

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sin15^(@)+cos105^(@)=?

Prove that sin 105^(@) + cos 105^(@) = cos 45^(@)

cos15^(@)+cos105^(@)=

Prove that: s in105^(@)+cos105^(0)=cos45^(@)

2sin45^(@)cos45^(@)

sin 15^(@) + cos 105 ^(@) =

sin75^(@)-sin15^(@)=cos105^(@)+cos15^(@)

Prove that: sin 105 ^(@) + cos 105 ^(@) = cos 45 ^(@)

Prove that : (i) "sin"105^(@)+cos105^(@)=(1)/(sqrt(2)) (ii) cos105^(@)+cos15^(@)="sin"75^(@)-"sin"15^(@)

sin15^@+cos105^@=