A = 30°, prove that 2 Cos A-1 = 1-2 sin A.
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Step-by-step explanation:
pur ths value of A in all then
L.H.S.= 2CosA -1
= 2 cos 30° -1
= √3 -1
then prove R.H.S.
= 1 - 2sin30°
= 1 - 1
= 0
here it can't prove because
L.H.S. is not equal tp R.H.S.
therefore we cant prove that
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