Pre Cal Questions

How do I sketch and find the measures of the missing sides and angles of:

y= 3 sin x

y= sin X-2

y= 2 sin - 3x

In general, you sketch graphs of trigonometric functions, the same way you'd sketch any other function - make a table, plot some points, and connect the graph as appropriate. You know the basic shape of a sine wave, and you know it repeats with a period of 2pi. Based on that, I'd plot points for x-values that are multiples of pi/4. So, for the first one, you'd have...

y = f(x) = 3sin(x)

f(pi/4) = 3sin(pi/4) = ???
f(pi/2) = 3sin(pi/2) = ???
etc.

Math4dummies said:

How do I [...] find the measures of the missing sides and angles of [these functions?]

Click to expand...

I'm not quite sure what you mean by this. All you've posted are three functions that are sine waves. There aren't any "missing sides" or "missing angles" to be found. If you could please post the full and exact text of the exercise in question, that would help out a lot. Thank you.