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cos7x+cosx= o
given that 8x=π
x=π/8
L.H.S.
COS7X+COSX
COS7π/8 +COSπ/8
COS (π-π/8)+COSπ/8
-COSπ/8+COSπ/8
=0
HOPE IT HELPFUL FOR YOU
PLEASE MARK IT AS BRAINLIEST ANSWER IF YOU HAVE SATISFIED
given that 8x=π
x=π/8
L.H.S.
COS7X+COSX
COS7π/8 +COSπ/8
COS (π-π/8)+COSπ/8
-COSπ/8+COSπ/8
=0
HOPE IT HELPFUL FOR YOU
PLEASE MARK IT AS BRAINLIEST ANSWER IF YOU HAVE SATISFIED
arpityadav9559:
thanks
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