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Ray Of Light [21]
4 years ago
9

What is the solution set for the quadratic equation x2 - 16 = 0?

Mathematics
1 answer:
iragen [17]4 years ago
3 0
<span>B) {-4, 4} 

Proof:

Solve for x over the real numbers:
x^2 - 16 = 0

The left hand side factors into a product with two terms:
(x - 4) (x + 4) = 0

Split into two equations:
x - 4 = 0 or x + 4 = 0

Add 4 to both sides:
x = 4 or x + 4 = 0

Subtract 4 from both sides:

Answer:  x = 4 or x = -4</span>
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1.Name 4 other angles whose cosine is the same as cos pi/3 . Explain using mathematical language how you know this is true.
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The trigonometry illustrates that the four angles whose cosine is the same as cos pi/3 will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3

<h3>How to illustrate the information?</h3>

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Therefore, for the angle cos(∏/3), the angles that are similar to this angle will be expressed as Cos(2∏n + ∏/3) where n is any positive integer.

Then the other four angles will be 7∏/3, 13∏/3, 19∏/3, and 31∏/3. Also, the statement that all angles that have the same cosine will have the same sine is false. The sine of an angle is simply equal to the cosine of the complementary angle.

Learn more on trigonometry on: brainly.com/question/7331447

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