prove it please i need it
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tan6x
Step-by-step explanation:
(sin7x+sin 5x)+ (sin 9x+sin 3x)/(cos 7x+cos 5x)+ (cos 9x+cos 3x)
2 sin 6x(cos x+cos 3x)/2 cos 6x(cos x+ cos 3x)
sin 6x/cos 6x
=tan 6x
R.H.S
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