sin 2θ = 2sinθ cosθ
sinθ = 1/7
cosθ = -√48/7 = -4√3/7
sin2θ = 2 * 1/7 * (-4√3/7) = -8√3/49
Evaluate the expression under the given conditions.
sin2(theta), sin(theta)=1/7(theta) in Q2
2 answers
where a i