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Declan Benson
Mathematics
10 August, 11:01
1-sin60:cos60=1-Tan30:1+Tan30
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Addison Juarez
10 August, 11:15
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Step-by-step explanation:
LHS = (1-sin60) / cos60
= (1-√3:2) / 1:2
=2 (1-√3:2)
=2-√3
RHS = (1-tan30) / (1+tan30)
={1 - (1:√3) }/{1 + (1:√3) }
={ (√3-1) / √3}/{ (√3+1) / √3}
= (√3-1) / (√3+1)
={ (√3-1) (√3-1) }/{ (√3+1) (√3-1) }
= (3-√3-√3+1) / (3-1)
= (4-2√3) / 2
=2-√3
Therefore LHS=RHS
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