Which of the following is equivalent to [sin (2θ) − tan (θ)] / tan (θ) ?

a. sin (2θ)
b. cos (2θ)
c. 1 - 2 cos^2 (θ)
d. 1 + 2 cos^2 (θ)

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

How do i solve uniform motion problems?

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1