Question

4 cos³ 60° - 3cos 60°​

Answer 1

Answer:

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Answer 2

Answer:

-1

Step-by-step explanation:

= 4 cos^3 60°-3 cos 60°

= 4*(1/2)^3-3*1/2

=1/2-3/2

=1-3/2

=-2/2

=-1

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