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3 years ago

Can someone help me?

Mathematics

1 answer:

hoa [83]3 years ago

5 0

Answer:

Step-by-step explanation:

If arccos (√3 / 2) = β, then cos β = adjacent side / hypotenuse = √3 / 2. This tells us immediately that the adjacent side length is √3 and the hypotenuse is 2. Via the Pythagorean Theorem, we know that the third side is 1.

This information rules out the 1st and 3rd answer choices.

Because cos 30° = adj / hyp = √3 / 2, we can conclude that the correct answer is the 4th one: 30°, 60°, 90°

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Answer:

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3 years ago

What are the solutions to the system of equations <br> {-x+y=4<br> {y+12=x^2+x

Gnoma [55]

Answer:

Step-by-step explanation:

$y=4+x$ ............................................ (1)

$y=x^2+x-12$ ............................................ (2)

now equate both (1) and (2)

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now substitute the values of x ,

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so, solution set:

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3 years ago

Nada drinks 54 glasses of water a week. How many glasses of water does she drink in 9 Weeks?

kodGreya [7K]

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Step-by-step explanation:

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2 years ago

If point A is located at (-7, -3),

Taya2010 [7]

Answer:

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Step-by-step explanation:

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3 years ago

Determine whether each sequence is a geometric sequence. If yes, then state the common ratio.

Snezhnost [94]

Answer:

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Step-by-step explanation:

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3 years ago