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KIM [24]
3 years ago
14

What is the relationship between cos(90°) and cos(-90°)?

Mathematics
1 answer:
sdas [7]3 years ago
7 0

Answer:

  they have the same value (0)

Step-by-step explanation:

Cosine is an even function, meaning that cos(x) = cos(-x). When x=90°, we have ...

  cos(90°) = cos(-90°)

Both values happen to be zero.

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6. In the figure below, measure of angle 1 = 3x + 5, measure of angle 2 = 5x - 18, and measure of angle 3 = 7x-2
Lesechka [4]
See photo for solution and mark me as brainliest if i helped :)

A: although it seems like they are forming a 90º angle, they actually add up to a 89 º angle and therefore are not complementary

B: see photo

4 0
3 years ago
Cylinder has a height of 15 centimeters and a radius of 10 centimeters. What is its volume? Use ​ ≈ 3.14 and round your answer t
tatuchka [14]

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3 0
3 years ago
Un<br>and<br>simplify<br>the first the​
Gnoma [55]

Step-by-step explanation: what is the question

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3 years ago
Find the Y intercept
Norma-Jean [14]
The y-intercept is at the point (0, -3)
7 0
3 years ago
To make a profit, a company’s revenue must be greater than its operating costs. The company’s revenue is modeled by the expressi
ahrayia [7]

Answer:

Inequality: 7.5x – 100 > 79.86 + 5.8x

Solution: x>106

The company must sell at least  106 items to make a profit.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Revenue: 7.5x – 100

Costs: 79.86 + 5.8x

To make a profit, a company’s revenue must be greater than its operating costs.

So:

7.5x – 100 > 79.86 + 5.8x

Solving for x (number of items sold)

7.5x-5.8x>79.86+100

1.7x >179.86

x>179.86/1.7

x> 105.8

x>106

The company must sell at least 106 items to make a profit.

Feel free to ask for more if needed or if you did not understand something.

6 0
3 years ago
Read 2 more answers
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