TaNx = 4, what is x equal to

TaNx = 4, what is x equal to

x=arctan4

TaNx = 4 / 3, what is TaNx / 2?

TaNx = Tan (x / 2 + X / 2) = (2tanx / 2) / (1 - (TaNx / 2) ^ 2) = 4 / 3, so TaNx / 2 = - 2 or 1 / 2

Sin α + cos α / sin α - cos α = 2, find the value of (1) sin α cos α, (2) 2cos & # 178; α + 3sin α & # 178

Sin α + cos α / sin α - cos α = 2Sin α + cos α = 2Sin α - 2cos α sin α = 3cos α Tan α = 3, let t = Tan α = 3sin α cos α = 1 / 2 * sin2 α = 1 / 2 * 2T / (1 + T ^ 2) = 1 / 2 * 2 * 3 / (1 + 3 ^ 2) = 3 / 10 = 0.32cos & # 178; α + 3sin α & # 178; = 2 + sin α & # 178; = 2 + (1-cos2 α) / 2 = 2 + (