Algebra 2ChallengeCircles & Lines ShareCircles & Lines · Challenge problemWhat is sin245∘\sin^2 45^\circsin245∘?A34\dfrac{3}{4}43B56\dfrac{5}{6}65C32\dfrac{3}{2}23D111E12\dfrac{1}{2}21Check Show answer Walk through it step by step Practice more like this Review this concept