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Afina-wow [57]
3 years ago
13

Use the product-to-sum identities to rewrite the following expression as a sum or difference.

Mathematics
1 answer:
PtichkaEL [24]3 years ago
3 0
Answer:

= cos4x

Explanation:

cosAcosB = [cos(A-B)+cos(A+B)]

Given: 2cos(2x)cos(2x)

= 2[cos(2x-2x)+cos(2x+2x)]

= 2cos4x^2
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Akimi4 [234]

Answer:

1) A

B) 5.818 stops

Step-by-step explanation:

Number One is less than or equal to 21 because the person only has 21 dollars, so she can't spend more than 21.

B can be solved through the equation by first subtracting $5, and then dividing 2.75 by 16.

4 0
3 years ago
the temperature of fridge compartment of a refrigerator is set at 8 °C . the fridge compartment is set at -10°C . what is differ
Otrada [13]

Step-by-step explanation:

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5 0
3 years ago
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Sergeu [11.5K]

Answer:

  125°

Step-by-step explanation:

The angle marked f° is called an "external angle" of the triangle. Relative to that external angle, the two internal angles marked 44° and 81° are called "remote internal angles." Because f° and the adjacent internal angle are supplementary (add to 180°), and because all of the internal angles of the triangle add to 180°, the measure of f is equal to the sum of the remote interior angles:

  f° = 44° + 81°

  f° = 125°

6 0
3 years ago
(a + b)(a – b) = a2 + b2 true or false?
Alja [10]
False it's a2-b2 :))))
3 0
3 years ago
Read 2 more answers
Two angles form a linear pair. the measure of one angle is 26∘26∘ greater than the measure of the other angle. find the measure
Mashcka [7]
A linear pair is a pair of angles that form a line. And since they form a line, when added, they equal 180.

x = one angle....y = the other one
x + y = 180
x = y + 26
time to sub
y + 26 + y = 180
2y + 26 = 180
2y = 180 - 26
2y = 154
y = 154/2
y = 77 <=== this is one angle

x = y + 26
x = 77 + 26
x = 103 <=== and the other one
4 0
3 years ago
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