Find the value of x to the nearest tenth

tan 48 = x / 7

so

x = tan 48 * 7

x= 1.1106 * 7

x = 7.7742

x = 7.8

answer

7.8

This problem can be solved with trigonometry. You need to pick the correct trig ratio, from sine, cosine, and tangent, to solve it.

This is how you decide which trig ratio to use. For the given angle of 48 degrees, the leg measuring 7 units is the adjacent leg. (Adjacent = next to the angle.) The leg measuring x units is the opposite leg. (Opposite = across from the angle.) The trig ratio that relates the lengths of the opposite leg and the adjacent leg is the tangent.

Now you use a calculator to find tan 48 = 1.1106, and multiply it by 7.

x = 7.8

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

look at photo