Can you give examples of situations that might be modeled with trigonometric functions? that is, can you give examples of phenomena that take on a series of values over and over again?

Here are your examples

A spring that is bouncing up and down.

An atom or molecule that resonates with a certain frequency.

In fact, anything that resonates: a violin string, a pendulum, the air column in a muffler,

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24