Please help, I can't figure this out.

The answer to your question is   A = 51.37     B = 38.7°  c = 19.2 cm

Step-by-step explanation:

Data

Right triangle

C = 90°

A = ?

B = ?

a = 15 cm

b = 12 cm

c = ?

Process

1.- Calculate the length of c.

    c² = a² + b²

-Substitution

    c² = 15² + 12²

-Simplification

     c² = 225 + 144

     c² = 369

     c = 19.2 cm

2.- Calculate the angles

∠A  

sin A = Opposite side / hypotenuse

Opposite side = 15    hypotenuse = 19.2

sinA = 15/19.2

sinA = 0.781

sin⁻¹A = A = 51.37

3.- Calculate B

sin B = 12 / 19.2

sin B = 0.625

sin⁻¹B = B = 38.7°

Angle A: 51.34°

Angle B: 38.66°

c = 19.21 cm

Step-by-step explanation:

c² = 12² + 15²

c² = 369

c = 3sqrt(41)

c = 19.21 cm (nearest hundredths)

Angle A

tanA = opposite/adjacent

tanA = 15/12

A = 51.34019175

Angle B + Angle A + 90 = 180

Angle B + 51.34 + 90 = 180

Angle B = 38.66

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

[2, 2.5)

(2.5, 3]

step-by-step explanation:

i think its these two not sure [2, 2.5)

(2.5, 3]