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Anybody know the answer to these

Anybody Know The Answer To These class=

Sagot :

Answer:

Number 9.                x=√377 or x=−√377

Step-by-step explanation:

sqdancefan

9514 1404 393

Answer:

  9.  19.4

  10.  15.8

  11.  16.6

Step-by-step explanation:

The appropriate relations are all given. Fill in the given numbers and solve for the unknown.

9. x^2 +8^2 = 21^2

  x^2 = 441 -64 = 377

  x = √377

  x ≈ 19.4

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10. sin(33°) = x/29

  x = 29·sin(33°)

  x ≈ 15.8

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11. cos(55°) = x/29

  x = 29·cos(55°)

  x ≈ 16.6

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