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guapka [62]
2 years ago
11

Help I'm not sure if this is the answer? (This question is about trigonometric ratios)

Mathematics
1 answer:
dem82 [27]2 years ago
3 0

9514 1404 393

Answer:

  (b) 15.32

Step-by-step explanation:

You can use your triangle sense to answer this.

The side x will always be shorter than the hypotenuse, 20. This eliminates the last two choices.

If the angle is 45°, then the sides are equal at about 0.707 times the length of the hypotenuse. That would make them 0.707×20 = 14.14. Since the angle is greater than 45°, the opposite side will be greater than 14.14. Only one answer choice fits between 14 and 20: the second choice -- 15.32.

__

The mnemonic SOH CAH TOA reminds you of the relation ...

  Sin = Opposite/Hypotenuse

  sin(50°) = x/20

  x = 20×sin(50°) . . . . multiply by 20 to find x

  x ≈ 15.32 . . . . . . . . . use your calculator to evaluate

__

The attachment is intended to show how the triangle side lengths change with angle.

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Answer:

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Step-by-step explanation:

9x-2=11x+5

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\frac{-7}{2} = \frac{2x}{2}

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Answer:

68

Step-by-step explanation:

Draw a line from(-4,3) to (4,3).

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<em>square-length*width</em>

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3 years ago
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Let v1=(2,-6) and v2=(-4,7)
seropon [69]

The magnitude of each vector is the Pythagorean sum of its components.


a. |v1| = √(2² + (-6)²) = √40 = 2√10

|v2| = √((-4)² + 7²) = √65


b. To make each vector into a unit vector, divide each component by the vector's magnitude.

u1 = v1/|v1| = (2/(2√10), -6/(2√10))

u1 = (√10/10, -3√10/10)


u2 = v2/|v2| = (-4/√65, 7/√65)

u2 = (-4√65/65, 7√65/65)


8 0
3 years ago
Elizabeth has 5/6kg of beads. IF she shares the beads between 4 friends, how much kg does each friend receive.
Mekhanik [1.2K]

Answer:

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Step-by-step explanation:

5/6 ÷ 4/1 (keep-change-flip)

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Answer:

<em>I</em>(-1,3)

Step-by-step explanation:

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