Sine is positive in

Mathematics

1 answer:

In-s [12.5K]2 years ago

7 0

Answer:

sin is only positive in 1st and 2nd quadrants

Step-by-step explanation:

As you may know, sine is defined as y-term or value in (x, y). You can go see a unit circle.

Remember that sine is y while cosine is x.

Since sine is y, It'd be a horizontal line. And since it's a horizontal line, it intersects two points in a unit circle.

Q1 and Q2 both are positive while Q3 and Q4 are negative.

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Which of the following is a correct interpretation of the expression -7- (-11)?

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Answer:

B. Start at -7 on the number line and move 11 to the right.

Step-by-step explanation:

Given:

- 7 - (-11) expression

We can add or remove only positive numbers on the number line to get it correct, so we need to open the parenthesis. When evaluated we get:

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Correct interpretation of of this expression is:

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Correct choice is:

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3 years ago

PLEASE HELP!

Mariana [72]

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Information Given:
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ON = 7x - 9
LM = 6x + 4
MN = x - 7
OL = 2y - 7

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Since it is a parallelogram:
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ON = LM and
MN = OL

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ON = LM:
-----------------------------------------------
7x - 9 = 6x + 4

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Subtract 6x from both sides:
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x - 9 = 4

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Add 9 to both sides:
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x = 13

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MN = OL:
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x - 7 = 2y - 7

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Sub x = 13:
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13 - 7 = 2y - 7

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Simplify:
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6 = 2y - 7

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Add 7 on both sides:
-----------------------------------------------
13 = 2y

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Divide by 2:
-----------------------------------------------
y = 13/2

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Answer: x = 13, y = 13/2 (Answer D)
-----------------------------------------------

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Answer:

Step-by-step explanation:

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