The diagram shows components that have been added together to form rx and ry. rx and ry are components of the resultant vector.

which formula can be used to find the angle of the resultant vector?
a. sin 0= ry/rx
b. tan 0= rx/ry
c. tan 0= ry/rx
d. sin 0= rx/ry

How will each of the following changes in demand and/or supply affect equilibrium price and equilibrium quantity in a competitive market; that is, do price and quantity increase or decrease, or are the answers indeterminate because they depend on the magnitudes of the shifts?

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?