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Prove related problems - Type 2-(1) If c...

Prove related problems - Type 2-(1) If `cos theta+sintheta=sqrt2costheta` prove that `cos theta-sin theta=sqrt2 sin theta`(2) Given that `(1+cos alpha)(1+cos beta)(1+cos gamma)=(1-cosalpha)(1-cosbeta)(1-cosgamma)` Show that the value of each member of the equality is `sinalphasinbetasingamma`

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