3 years ago

What is the slope of the line that passes through the point 3,5 and -2,2

Mathematics

1 answer:

Nostrana [21]3 years ago

8 0

Answer:

3/5

Step-by-step explanation:

Slope=

$\frac{y2 - y1}{x2 - x1}$

slope =

$\frac{2 - 5}{ - 2 - 3}$

$\frac{3}{5}$

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Verify: cos(2A)=(cotA-tanA)/cscAsecA

kolbaska11 [484]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

cot A = $\frac{cosA}{sinA}$ , tanA = $\frac{sinA}{cosA}$ , cscA = $\frac{1}{sinA}$ , secA = $\frac{1}{cosA}$

Consider the right side

$\frac{cotA-tanA}{cscAsecA}$

= $\frac{\frac{cosA}{sinA}-\frac{sinA}{cosA} }{\frac{1}{sinA}.\frac{1}{cosA} }$

= $\frac{\frac{cos^2A-sin^2A}{sinAcosA} }{\frac{1}{sinAcosA} }$

= $\frac{cos^2A-sin^2A}{sinAcosA}$ × sinAcosA ( cancel sinAcosA )

= cos²A - sin²A

= cos2A

= left side ⇒ verified

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3 years ago

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Yes. When simplifying 15:60 by dividing each side by 3, you get 5:20, which is the same as 5:20.

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ycow [4]

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The answer is C

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