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Sergeu [11.5K]
3 years ago
7

Simplify the expression 5g-7g+4+2g

Mathematics
1 answer:
Gnesinka [82]3 years ago
3 0
5g - 7g + 4 + 2g
= 5g - 7g + 2g + 4
= -2g + 2g + 4
= 4 

[5g -7g +2g gives us 0]
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Use the pythagorean theorem to prove that this point lies on the unit circle. Find csc(0) where 0=-120.
exis [7]

By applying Pythagorean theorem, we have proven that the point (-1/2, -√3/2) lies on the unit circle.

<h3>How to prove this point lies on the unit circle?</h3>

In Trigonometry, an angle with a magnitude of -120° is found in the third quarter and as such, both x and y would be negative. Also, we would calculate the reference angle for θ in third quarter as follows:

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For the coordinates, we have:

sin(-120) = -sin(60) = -1/2.

cos(-120) = -cos(60) = -√3/2.

By applying Pythagorean theorem, we have:

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z = √((-1/2)² + (-√3/2)²)

z = √(1/4 + 3/4)

z = √1

z = 1.

Read more on unit circle here: brainly.com/question/9797740

#SPJ1

4 0
2 years ago
Can you please explain how 7.86×4.6=36.156
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7.86 x 4 is 36.156 because you have to line up the decimals and multiply them and then you get 36.156
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