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Svetllana [295]
3 years ago
15

Cos^4A - sin^4A = COS2A​

Mathematics
1 answer:
Elenna [48]3 years ago
8 0

Step-by-step explanation:

hope u understand it's just a simple formula

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12. (05.02 LC) Look at the figure below: an image of a right triangle is shown with an angle labeled y If sin y° = 7 over q and
meriva

Answer:

sec~y=\frac{q}{r}

Step-by-step explanation:

tan ~y=\frac{7}{r} \\\\\frac{sin~y}{cos~y} =\frac{7}{r} \\\\sin~y=\frac{7}{r} cos~y\\sin ~y=\frac{7}{q} \\\frac{7}{q} =\frac{7}{r} cos~y\\sec~y=\frac{7}{r}  \times \frac{q}{7} =\frac{q}{r}

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3 years ago
Suppose you want to be sure that the total cost of the three items does not go over a certain amount. How can you use estimation
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Answer:

i don't konw

Step-by-step explanation:

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3 years ago
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4 years ago
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Answer ASAP!!! Find the distance on the coordination system from the point (-3,4) to the point (8,-7).
alexdok [17]

Answer:

The answer to your question is: distance = 15.55 units

Step-by-step explanation:

Data

A (-3, 4)

B (8, -7)

Formula

distance = √((x2-x1)² + (y2-y1)²)

Substitution

distance = √((8- -3)² + (-7-4)²)

distance = √((8 + 3)² + (-7-4)²)

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distance = √(121 + 121)

distance = √242

distance = 15.55 units

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3 years ago
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