Question

Anybody know the answer to these

Answer 1

Number 9. x=√377 or x=−√377

Explanation:

Answer 2

9514 1404 393

Answer:

9. 19.4

10. 15.8

11. 16.6

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