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Leya [2.2K]
3 years ago
11

How do I get from: Sin x = -1/2To: x = 7Pi/6, 11Pi/6

Mathematics
1 answer:
brilliants [131]3 years ago
8 0
A few ways. you can enter it into a calculator for one, but the easiest way would be to reference a unit circle and look for an ordered pair where sin (the y value), is equal to -1/2

on a unit circle, the sin value is -1/2 at 7pi/6 and 11pi/6

because sin is the y value, it will additionally be in the quadrants III or IV based on the fact that (-1/2) as a sin value IS a negative and would have to be found in a quadrant in which sin is negative (the lower half of a coordinate plane, in this case)
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What inequality symbol belongs in the circle: -4 _ 5<br> 30 POINTS!
navik [9.2K]

Answer:

<

Step-by-step explanation:

Inequality symbols:

<     less than

>     greater than

=     equal to

≤     less than or equal to

≥     greater than or equal to

In this case, it is known that -4 is less than 5, or:

-4 < 5.

~

7 0
3 years ago
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Alika [10]

Answer:

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7 0
2 years ago
maggie's brother is 3 years younger than twice her age. the sum of their ages is 24. write solve an equation to determine maggie
prohojiy [21]
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7 0
3 years ago
Fifteen years later, a man will be two times as old as he was 15 years ago. How old is he now?
Inga [223]

Answer:

Let the present age of the man be x years.

Age of the man 15 years ago =(x−15) years and

Age of the man 15 years later =(x+15) years

According to the given condition, we have

(x+15)=2(x−15)

⇒x+15=2x−30

⇒x−2x=−30−15

⇒−x=−45 or x=45 years

Hence, the present age of the man is 45 years.

Step-by-step explanation:

Hope it helps you..

Your welcome in advance..

(◍•ᴗ•◍)

6 0
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ICE Princess25 [194]
The number is 3 because 3 multiplied by itself (3) is equal to 9.
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2 years ago
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