Answer and Explanation
Your Answer is
Correct Answer is A
Explanation
BCO is a right-angled isosceles triangle, so the angle BCA is 45˚. tan45°=1, so choose A.
Use the following information to answer questions 55-57.
Consider the set of all points (x,y) that satisfy all 3 of the conditions below:
y ≥ 0
y ≤ 2x + 4
y ≤ -x + 4
The graph of this set is △ABC and its interior, which is shown shaded in the standard(x,y) coordinate plane below. Let this set be the domain of the function P(x,y) = 4x + 3y.
57. tan ∠BCA = ?