The expression blank is not equivalent to (1 - sin^2(x)) tan(-x)

Use the diagonals to determine whether a parallelogram with vertices u(2,−2), v(9,−2), w(9,−6), and x(2,−6) is a rectangle, rhombus, or square. give all the names that apply.

Simplify the expression 10/11(22z) + (a+5) -1

Evaluate cos2θ for cosθ = square root of 3/2