How sin 2(π/2+π/8)=cos 2(π/8)
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Hi ,
we know that ,
sin ( π/ 2 + A ) = cos A
LHS = Sin² ( π /2 + π /8 )
= cos² π/8
I hope this helps you.
:)
we know that ,
sin ( π/ 2 + A ) = cos A
LHS = Sin² ( π /2 + π /8 )
= cos² π/8
I hope this helps you.
:)
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