Prove that
sec2β+tan2β≡(cosA+sinA)/(cosA-sinA)
really need help

Atriangle includes one angle that 72º. which pair could be the measures of the other two angles of the triangle? a. 9º, 9º b. 26º, 46º c. 53º, 55º d. 72º, 108º

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?