2 years ago

Please help me!! i am struggling on these

Mathematics

1 answer:

Greeley [361]2 years ago

6 0

Answer:

The input units are missing

The output units are missing

Step-by-step explanation:

The input units are missing

The output units are missing

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2 years ago

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Step-by-step explanation:

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3 years ago

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Fiesta28 [93]

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3 years ago

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antiseptic1488 [7]

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3 years ago

In XYZ, XY=14, YZ=22, and XZ=28. What is the measure of angle Z to the nearest degree? *Law of Cosines

Liula [17]

Solution

Draw the diagram

So using cosine rule

$\begin{gathered} z^2=x^2+y^2-2xycosZ \\ \\ cosZ=\frac{x^2+y^2-z^2}{2xy} \\ \\ cosZ=\frac{22^2+28^2-14^2}{2(22)(28)} \\ \\ cosZ=\frac{67}{77} \\ \\ Z=30\degree\text{ \lparen to the nearest degree\rparen} \end{gathered}$

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1 year ago