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sasho [114]
3 years ago
8

Which word describes the four angels formed by the intersection of two perpendicular lines

Mathematics
1 answer:
AleksandrR [38]3 years ago
3 0
Two lines that intersect and form right angles are called perpendicular lines. The symbol ⊥ is used to denote perpendicular lines.
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Explain how to find the exact value of sin(570°).
Lena [83]
Quick answer Sin(570) = - 1/2
Comment

570 as an angle contains 1 complete revolution of the terminal arm. The terminal arm begins at the origin and the other (in this case swings around until it records 570° turning around the x axis in an anticlockwise direction.

Anticlockwise means going from 12 o'clock to 9 o'clock to 6 o'clock then 3 o'clock and back to 12 o'clock.

What is 570° (∅) degrees equivalent to?
We keep on subtracting 360 until we get a number between 0 and 360 inclusive.

Written this way 0 ≤∅≤360
570 - 360 = 210°

So we need to find the equivalent of 210° 

Method
210° = 180° + 30°
This means that ∅ is 30° below the x axis in the 3rd quadrant.

Sin(30) = 1/2 
In the third quadrant, the sine is minus. so 
sin(210°) = - 1/2 <<<<<<< Answer 
7 0
3 years ago
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Convert 24 + 6y = -36 in slope intercept fork
konstantin123 [22]

Answer:

y =  - 10

Step-by-step explanation:

24 + 6y = -36 \\ 6y = -36 - 24 \\ 6y =  - 60 \\ y =   - \frac{60}{6}  \\ y =  - 10

5 0
3 years ago
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Simplify negative 5 minus the square root of negative 44 negative 5 minus 4 times the square root of 11 i negative 5 minus 4 i t
Anika [276]

Answer:

-5-\sqrt{-44}=-5-2\sqrt{11}i

Step-by-step explanation:

We want to simplify:

-5-\sqrt{-44}

We rewrite the expression under the radical sign to obtain:

-5-\sqrt{4\times11\times -1}

We split the expression under the radical sign to get:

-5-\sqrt{4} \times \sqrt{11} \times \sqrt{-1}

Recall that:

\sqrt{-1}=i

This implies that:

-5-\sqrt{4} \times \sqrt{11} \times \sqrt{-1}=-5-2\sqrt{11}i

Therefore -5-\sqrt{-44}=-5-2\sqrt{11}i

6 0
3 years ago
Need help
jolli1 [7]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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dan picked 7 plums and 6 apples from the orchard. he gave 3 plums to sandy how many plums does he have left?
m_a_m_a [10]
He has 4 plums left :) (and in case your wondering he still has 6 apples)
3 0
3 years ago
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