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nata0808 [166]
3 years ago
13

Please show your work/explain. thank you so much <3

Mathematics
1 answer:
Jlenok [28]3 years ago
5 0

Answer:

cos A =  12/13

Step-by-step explanation:

TanC = AB/BC = 2.4

therefore

BC = AB/2.4

Pythagorean theorem

AC = √(AB² + (AB/2.4)²) = (13/12)AB

Cos A = AB/AC = AB / (13/12)AB = 12/13

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What is the discriminant of the quadratic equation 4x^2-7x-6=04x 2 −7x−6=0?
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7 0
4 years ago
9. What is the domain of the relation {(-2, 4), (1, 3), (0, -4), (3, 2)}?
frez [133]

\huge\sf \fcolorbox{purple}{redblush}{ Question :  - }

<h3>What is the domain of the relation</h3>

R = {(-2, 4), (1, 3), (0, -4), (3, 2)}?

  • A. (-2, 0, 1, 3}
  • C. {0, 1, 2,4}
  • B.{-4, -2, 2, 3}
  • D. {-4,2,3,4}

<h2>Answer:-</h2>

Domain of relation is (-2, 1,0,3}

so option 1st is correct

<h2>________________</h2>
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2 years ago
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