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3 years ago

10

Are my angles correct?

1 answer:

Licemer1 [7]3 years ago

6 0

Answer:

Yes. You are correct.

Step-by-step explanation:

Tan(U) = opposite / adjactent

Tan(U) = 7*√3 / 7

Tan(U) = √3

Just off the top of my head, they look right.

U = Tan-1 (√3)

U = 60

Therefore tan(W) = 90 - 60 = 30

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Read 2 more answers

Given f(x) = x^2 − 2x − 5.

lukranit [14]

Answer:

$(x - 1)^2 - 6$

Step-by-step explanation:

You need to know:

Vertex form = $a(x -h)^2 + k$

The vertex is at

(h, k)

<u>Need to know about perfect squares </u>

<u>Need to know how to complete the square.</u>

-----------------------------------------------------------------------------------------

<u>To convert $x^2-2x-5$ you need to complete the square on the equation.</u>

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$(x^2 - 2x +1) -5 -1$

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<u>Next add</u> -5 - 1 = -6

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Our quadratic is in vertex form now.

Vertex form = $a(x -h)^2 + k$

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4 years ago

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