2 years ago

Find all solutions to the equation. cos x = - 1/2

1 answer:

madam [21]2 years ago

4 0

Answer:

$x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n$

Step-by-step explanation:

Radian: x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n

Degree: x = 120 + 360n , x = 240 + 360n

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docker41 [41]

THE ONE ABOVE IS WRONG

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2 years ago

pogonyaev

Answer:

- $\frac{1}{2}$

Step-by-step explanation:

Find slope using the slope formula : $\frac{y2-y1}{x2-x1}$

Plug in the given points : $\frac{4- (-8)}{-11-13}$

Add the numbers : $\frac{12}{-11-13}$

Calculate the difference : $\frac{12}{-24}$

Reduce the fraction : - $\frac{1}{2}$

Solution : - $\frac{1}{2}$

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2 years ago

Pavlova-9 [17]

-13x=78
-13x/-13=78/-13
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2 years ago

Trava [24]

N,R and T,U. Both are at 90 degree angles.

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2 years ago

Contact [7]

8% = 0.08
150 x 0.08 = 12
Answer = 12

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2 years ago