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Prove that: sin 65^0+cos 65^0=sqrt(2)cos...

Prove that: `sin 65^0+cos 65^0=sqrt(2)cos 20^0`

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Prove that: sin65^(@)+cos65^(0)=sqrt(2)cos20^(@)

(a) Prove that sin65^(@)+cos65^(@)=sqrt(2)cos 20^(@) (b) Prove that sin47^(@)+cos77^(@)=cos17^(@)

(a) Prove that sin65^(@)+cos65^(@)=sqrt(2)cos 20^(@) (b) Prove that sin47^(@)+cos77^(@)=cos17^(@)

(a) Prove that sin65^(@)+cos65^(@)=sqrt(2)cos 20^(@) (b) Prove that sin47^(@)+cos77^(@)=cos17^(@)

Prove that, sin65^(@)+cos65^(@)=sqrt(2)cos20^(@)

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

Prove that cos65^0+cos115^0=0

Prove that cos65^0+cos115^0=0

Prove that cos65^0+cos115^0=0

2sin65^@cos25^@=