Idon’t know how to do any of this

The length of x in #1 is 15.57

Step-by-step explanation:

Let's use #1 as an example to teach show you how to do this. In a right triangle we can solve these using trig. In this particular one, we have the measure adjacent to the angle and we are looking for the one opposite of the angle. So we look at all the trig functions and select the one that uses both of those two terms.

Sinα = Opp/Hyp

Tanα = Opp/Adj

Cosα = Adj/Hyp

As you can see, Tan is the function we are looking for. So we plug in all known information into that equation.

Tanα = Opp/Adj > Plug in known values

Tan(60) = x/9 >Calculate out the trig function

1.73 = x/9 > Multiply by the denominator to solve

15.57 = x

answer: a and b

step-by-step explanation:

i hope this is what you were looking for.

see attached graph