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3 years ago

Find B round to the nearest tenth!!!! laws of cosines!!!!

Mathematics

1 answer:

AlexFokin [52]3 years ago

3 0

Answer:

32.7°

Step-by-step explanation:

Use the formula for law of cosines, for this question we need so solve for angle B, so use...

b² = a² + c² - 2(a)(c)Cos B

We are given a, b, and c, so plug them in...

55² = 90² + 50² - 2(90)(50)Cos B

Now simplify...

3,025 = 8100 + 2500 - (9000)Cos B

-7,575 = -(9000)Cos B (subtract 8100 and 2500 from both sides)

0.841666667 = Cos B (divide both sides by -9000)

Cos^(-1) 0.841666667 = B (use cosine inverse function on calculator)

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What is the slope of the line that passes through the points (48, 10) and (-36, 17)?

schepotkina [342]

Answer:

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(2, 5)

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These ordered pairs can then be plotted into a graph.

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3 years ago

Suppose the equation ax^2+bx+c=0 has no real solution and a graph of the related function has a vertex that lies in the second q

Veseljchak [2.6K]

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3 years ago

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3 years ago

A recipe for lemon bars called for 9" X 13" pan. How many 1" X 1" bars can be cut? How many 2" X 2" bars can be cut? How much is

gregori [183]

The number of bars which can be cut for the 1" X 1" and 2" X 2" square bars are; 117 and 29 units respectively.

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Ultimately, one square unit of the pan is wasted for the 2" X 2" square bars.

Find B round to the nearest tenth!!!! laws of cosines!!!!​

Find B round to the nearest tenth!!!! laws of cosines!!!!