prove the following
(1)cos 60° = 2 cos^2 30°-1
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Answer:
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Step-by-step explanation:
LHS
Cos 60°=1/2
RHS
2 Cos²30°-1
=2×(√3/2)²-1
=3/2-1
=1/2
LHS=RHS (PROVED)
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