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3 years ago

What is the reference angle

Mathematics

1 answer:

emmainna [20.7K]3 years ago

6 0

The acute angle between the terminal arm/terminal side and the x-axis, the reference angle is an angle being sandwiched by the terminal side and the x-axis and it’s always positive

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A square city block has a side length of 563 yards what is the perimeter of the block<br> Block

olga nikolaevna [1]

Answer:

The perimeter is 2252 yards.

Step-by-step explanation:

In a square all sides are equal.

Side = 563 yards

Perimeter = 563 x 4 = 2252 yards.

7 0

3 years ago

In a triangle with vertices A,B and C, if C =64° and the lengths AC= 40mm and BC= 70mm find the length AB using cosine rule

boyakko [2]

Answer:

63.6mm

Step-by-step explanation:

According to cosine rule;

AB² = BC²+AC²-2(BC)(AC)cos m<C

Substitute the given values

AB² = 70²+40²-2(70)(40)cos 64

AB² = 4900+1600-5600cos64

AB² = 6500-5600(0.4384)

AB² = 6500-2,454.87

AB² = 4,045.12

AB = √4,045.12

AB = 63.6mm

Hence the length of AB is 63.6mm

5 0

2 years ago

Find the zeros of the function.<br> f(x) = 2x2 – 2x – 12

Amiraneli [1.4K]

Answer:

Step-by-step explanation:

2x^2-2x-12

This has solutions of x=3 and x= -2

3 0

3 years ago

Read 2 more answers

Describe how the graph of each function differs from the graph of f(x)=|x|. Then determine the domain and range.

Brilliant_brown [7]

A. We can compress the graph of the function $f(x)=|x|$ in the y-direction by multiplying the whole function by a constant C, such that $0$ Since $0$ , the graph of the function $g(x)= 0.6|x|$ is obtained from the graph of the function $f(x)=|x|$ by compression in the y-direction.

B. We can stretch the graph of the function $f(x)=|x|$ in the y-direction by multiplying the whole function by a constant C, such that $C>1.$ Since $4>1,$ , the graph of the function $g(x)= 4|x-3|$ is obtained from the graph of the function $f(x)=|x|$ by compression in the y-direction and translation 3 units to the right.

C. We can flip the graph of the function $f(x)=|x|$ upside down by multiplying the whole function by −1, then translate 1 unit to the left and 5 units up. Then we will get the function $g(x)=-|x+1|+5.$

7 0

3 years ago

What is the coordinate j(2,-5) after a reflection in the line y=x?

kenny6666 [7]

Answer:

(- 5, 2 )

Step-by-step explanation:

Under a reflection in the line y = x

a point (x, y ) → (y, x ), thus

(2, - 5 ) → (- 5, 2 )

7 0

3 years ago