" 25."sin65^(@)*cos38^(@)=

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

2sin65^@cos25^@=

Prove that, sin65^(@)+cos65^(@)=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^(@)

The value of (sin65^(@))/(cos25^(@)) is

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

Without using trigonometric tables evaluate. ("sin"65^(@))/("cos"25^(@))+("cos"32^(@))/("sin"58^(@))-"sin"28^(@)."sec"62^(@)+"cosec"^(2)30^(@)

Simplify by reducing to a single term : sin 22 ^(@) cos 38^(@) + cos 22^(@) sin 38^(@).