In trigonometry, cofunctions (sine and cosine, cosecant and secant, and tangent and cotangent) of angles are congruent.
a) complementary
b) linear
c) right
d) straight

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

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

286 divided by 457.6 what is the quotient?