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harkovskaia [24]
3 years ago
6

If tan = 12/5 and cos = -5/13, then what is sin?

Mathematics
1 answer:
Over [174]3 years ago
4 0

9514 1404 393

Answer:

  sin -12/13

Step-by-step explanation:

You can use the identity ...

  tan = sin/cos

to solve for sine:

  sin = cos·tan

  sin = (-5/13)(12/5) =

  sin -12/13

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a photograph is printed in the center of a piece of paper measuring 7 cm by (x + 8) cm. The photo measures 5 cm by (x +6) cm . T
Nadusha1986 [10]

The paper is 7 cm by (x + 8) cm.

A photo is 5 cm by (x + 6) cm, and is printed in the middle of the paper.

The area of the border/space around the photo is 50 cm².


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The area of the photo:

A = 5 · (x + 6)


Your equation to find the area of the border around the photo is:

(7 · (x + 8)) - (5 · (x + 6)) = A

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Since you know the area of the border, you can plug it in:

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Multiply the 7 into (x + 8), and multiply the 5 into (x + 6)

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Distribute/multiply the - to (5x + 30)

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Combine like terms

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Subtract 26 on both sides

2x = 24


Divide 2 on both sides


x = 12

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3 years ago
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Step-by-step explanation:

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2 years ago
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3 years ago
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