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Diano4ka-milaya [45]
2 years ago
12

What are the sine, cosine, and tangent of circle = 3pi/4 radians?

Mathematics
1 answer:
KengaRu [80]2 years ago
7 0

if  you don't have a Unit Circle yet, this is a good time to get one, you can find many online, check maybe in yahoo images, or google images.

Check the picture below.

notice the section encircled in purple.

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How do I Simplify 4a – 7b + 2ab – a + b (I need step by step cause I'm trying to learn this)
Alex

Step-by-step explanation:

Ok. First of all, we need to follow the order of operations: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. We don't have any parentheses, exponents, or division to resolve, so you can skip those. So now you have: Multiplication, Addition, and Subtraction. We have multiplication in each term, but each term is fully simplified, so we have Addition and Subtraction left.

With that out of the way, let's go ahead and rearrange this equation so it is easier to solve. (<em>Note: we can only rearrange terms that are positive because subtraction is not commutative. But we can turn negative terms into "positive" terms by the method shown below.</em>)

4a - 7b + 2ab - a + b

4a + (-7b) + 2ab + (-a) + b (<em>Now the terms are all positive, so we can rearrange them, but they still have the same value.</em>)

4a + (-a) + 2ab + (-7b) + b

3a + 2ab + 7b

And there we go. Our answer is fully simplified. If you can understand this, you'll be able to simplify without isolating and rearranging the terms each time.

Hopefully this was helpful and not confusing.

4 0
2 years ago
If M (4.2) is the midpoint of AB and A (-5, -3), find the coordinates of B.
loris [4]

Given:

M(4,2) is the midpoint of AB and A(-5, -3).

To find:

The coordinates of B.

Solution:

Let the coordinates of point B are (a,b).

Midpoint formula:

Midpoint=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)

M(4,2) is the midpoint of AB and A(-5, -3).

M=\left(\dfrac{-5+a}{2},\dfrac{-3+b}{2}\right)

(4,2)=\left(\dfrac{-5+a}{2},\dfrac{-3+b}{2}\right)

On comparing both sides, we get

4=\dfrac{-5+a}{2}

8=-5+a

8+5=a

13=a

And,

2=\dfrac{-3+b}{2}

4=-3+b

4+3=b

7=b

Therefore, the coordinates of point B are (13,7).

4 0
3 years ago
Jenny used plastic cone shaped cups to serve punch. The cups were 6 inches in diameter and inches tall. What was the volume of e
Volgvan

Answer:

47.14 in³

Step-by-step explanation:

Here is the complete question

Jenny used plastic cone shaped cups to serve punch. The cups were 6 inches in diameter and 5 inches tall. What was the volume of each cup?

Volume of a cone = \frac{1}{3}πr²h

π = 22/7

Radius = diameter / 2 = 6 /2 = 3 inches

(1/3) x (3^2) x (22/7) x 5  = 47.14 in³

5 0
2 years ago
-3w-3x-7w+4x-2w<br><br><br> ......
valkas [14]

Answer:

− 1 2 +

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A farmer ships oranges in wooden crates. Suppose each orange weighs the same amount. The total weight of a crate filled with ora
maw [93]

Answer: g= 25 oranges

Step-by-step explanation:

.38g + 15 = 24.5

.38g = 24.5 - 15

.38g = 9.5

g = 9.5 ÷ .38

g = 25

7 0
2 years ago
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