Which action can be taken to the expression in step 3 to give an expression for step 4? divide both the numerator and denominator by sin(x)sin(y) divide both the numerator and denominator by sin(x)cos(y) divide both the numerator and denominator by cos(x)sin(y) divide both the numerator and denominator by cos(x)cos(y).

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.

Each eukaryotic cell has a plasma membrane, cytoplasm, a nucleus, ribosomes, mitochondria, peroxisomes, and in some, vacuoles; however, there are some striking differences between animal and plant cells.