Find the value of :-
4Cos³ 30° - 3Cos 30°
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cos30°=√3/2
4cos^3 30°-3 cos 30
4 x (√3/2)^3 - 3 x √3/2
4 x 3√3/8 - 3√3/2
12√3/8 - 3√3/2
Take the L.C.M
12√3-12√3 /3
=0
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