5. A 3 cm by 3 cm square piece of cardboard was cut from bigger square cardboard. The area of the remaining cardboard was 40cm2. If x represents
the length of the bigger cardboard, which of the following expressions give the
area of the remaining piece?
C. 52-9
A. 8-9
B. 52 + 9
D. 32 + 40

answer: y=0 if that is what u r looking for

thus, the first answer choice, y = sec x, is the correct one

step-by-step explanation:

hihi so drawing these 2 triangles is fairly simple. all that's left is finding the height of each one. luckily, we have a side length and an angle, so there is a trig function we can use to solve for the height. the easiest one to use would be tangent, since we have 2/3 things needed to find and the third needed is what we are solving for. tan(73°) * 30 ~= 98.13 and tan(73°) * 35 ~= 114.45