prove that-cos2x/2=sin²x
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simply fy all these answer
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hope may it help you
Step-by-step explanation:
sin x=1-cos²x/2
1+cos²x/2=?
sin²x= 1-cos x/2
RHS 1-cos²x/2
=1-(1-2sin²x)/2
=1-1+2sin²x/2
=sin²x
LHS
Therefore, LHS=RHS
1+cos²x/2=1+(2cos²x-1)/2
=cos²x answers
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