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" OSec "(-1)/(A)+1leqslant(" b ")quad |q...

" OSec "(-1)/(A)+1leqslant_(" b ")quad |quad " (ii) "sin25^(@)cos65^(@)+cos25^(@)sin65^(@)

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Evaluate : sin25^(@)cos65^(@)+cos25^(@)sin65^(@)

Evaluate: sin 25^(@) cos 65^(@) + cos 25^(@) sin 65^(@) .

2sin65^@cos25^@=

sin65^(@)+sin25^(@)=

sin 25^@ cos 65 ^@ + cos 25 ^ @ sin 65 ^@ = ?

cos 25^(@) - cos65^(@) =

Evaluate :- sin25^@cos65^@+cos25^@sin65^@ .

sin65^(@)+cos65^(@)=sqrt(2)cos20^(@)

sin25^(@)cos115^(@)=(1)/(2)(sin40^(@)-1)