Question

2 сos ² п/3 +sin ² п/6

Answer 1

$2cos ^{2} frac{ pi }{3} +sin^{2} frac{ pi }{6} =2*( frac{1}{2} )^2+( frac{1}{2} )^2=2* frac{1}{4} +frac{1}{4}= frac{3}{4} =0.75$