Prove that a line which makes angle x, y, z, t with four 4
diagonals of a cube is cos2x + cos2y + cos2 z + cos2 t =4/3.
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Solve 5 tan x = 5√(3) for 0° ≤ x ≤ 180°. a. 60° b. 150° c. 30° d. 120°

Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $40.00, how much money is angela saving on the dress? a. $0.80 b. $3.20 c. $32.00 d. $8.00

Which linear inequality is represented by the graph?