Awooden plank is leaning against a wall. the bottom of the plank is 3 feet from the wall. answer each of the following questions, and show all your work.(a) find ac, the approximate length of the plank. round to the nearest tenth of a foot.(b) find bc, the height off the ground where board touches as wall. round to the nearest foot.

AB = ==> distance between the bottom of the plank; and the wall ===> 3 ft.

C > 49 degrees

For letter a, to solve for AC:

AC ==> HYPOTENUSE. The angle C is the OPPOSITE side of AB.

use sine :

sin A ===> opposite/hypotenuse

Solve:

sin 49 > 3/AC

AC > 3 / sin 49

AC > 3.96 ft.

For letter b, to solve for BC:

We are now given with the base (3 ft.); and; the hypotenuse (3.96 ft.) so we can use the Pythagorean theorem:

a^2 + b^2 = c^2

Let:

a ===> AB

b ===> BC

c ===> AC

(AB)^2 + (BC)^2 ===> (AC)^2

3^2 + (BC)^2 ===> (3.96)^2

(BC)^2 ===> (3.96)^2 - 3^2

(BC)^2 ===> 6.6816

sqrt (BC)^2 ===> sqrt 6.6816

BC ===> 2.58 ft.

Hope that helps : )

(0,,,0)

step-by-step explanation:

the table of x and y values is shown in the attached pic(part of question)

we have to decide according that graph

given points are (0, 0) (–1, 0), (2, 0)

when we graph these points on graph they show an increasing line as shown in the attached pic

table a is wierd

step-by-step explanation:

6*f