Cos(pi/2 - x) = sin(x). sec(x) = 1/cos(x), so the left side would be sinx/cosx = tanx. So it checks out.
Answer:
The higher the temperature, the faster the reaction
Explanation:
Particles only react together when they collide with one another. An increase in temperature of reaction will lead to faster collision between the particles involved in the reaction and this happens because increased temperature puts the particles in a more excited state i.e they have higher kinetic energy. Higher kinetic energy then results in more frequent collisions which in turn makes the reaction happen faster
Answer: c. Fatigue test
Explanation:
In material science and in creation of an object that would carry load, the object is subjected a load testing known as fatigue testing, this is required to determine the capability of the equipment and the extent to which it can sustain it's maximum load without failure, this is known as fatigue testing. This is required to guard against many failures of equipments.
I believe the answer is: <span>the importance of quality time spent between parents and children, which is so difficult for the poor to find.
The story indicates that the parents in the poor family would most likely to spent most of their days doing long hours in their jobs to fulfill the family's ends meet.
This would make them do not possess enough time to properly pay attention to their children.</span><span />
I think it is Virginia, Connecticut, Massachusetts, New York, North and South Carolina, and Georgia. Not too sure though.
