Lavora sul piano cartesiano. \$2 In un sistema di assi cartesiani disegna la circon- ferenza di centro \( O(9 ; 6) \) e raggio uguale a 5 unită di misura ( \( u \) ). Traccia una corda \( A B \) parallela all'as- se delle ascisse e una corda CD parallela all'asse delle ordinate entrambe distanti 4 u dal centro, Come sono le due corde? Come sono gli archi che sottendono le due corde?

Which one of the following statements is incorrect? The opportunity cost of holding money balances is the interest that could have been earned if the money had been used to purchase interest-bearing assets instead. Anyone who wishes to enter into transactions in a monetary economy has to holid money as a medium of exchange. The quantity of money demanded for transaction purposes depends on the level of income. The quantity of money demanded for speculative purposes is positively related to the interest rate.

Find all solutions of the equation in the interval \( [0,2 \pi) \). \[ (\csc \theta-\sqrt{2})(\sec \theta+\sqrt{2})=0 \] Write your answer in radians in terms of \( \pi \). If there is more than one solution, separate them with commas. \( \theta=\square \)

The graph to the right shows a region of feasible solutions. Use this region to find maximum and minimum values of the given objective functions, and the locations of these values on the graph. (a) \( z=4 x+3 y \) (b) \( z=1.75 x+1.25 y \)

Find all solutions of the equation in the interval \( [0,2 \pi) \). \[ -\sqrt{1+\tan x}=\sec x \] Write your answer(s) in radians in terms of \( \pi \). If there is more than one solution, separate them with commas.

Find the values of the indicated functions assuming \( \theta \) is an acute angle. Given \( \cos \theta=\frac{40}{41} \), find \( \sin \theta \) and \( \cot \theta \). \( \sin \theta=\square \) (Simplify your answer.)