sin20°(3-4cos^2 70°) = √3/2 prove that
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Answer:
Step-by-step explanation:
L.H.S= sin20°(3-4cos^2 70°)
=0.342 (3-4*(0.342)^2)
=0.866
R.H.s= √3/2
= 0.866
∴ L.H.S = R.H.S [proved]
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