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DedPeter [7]
3 years ago
14

Identify the solution to the system of equations,answers if u know

Mathematics
1 answer:
mihalych1998 [28]3 years ago
6 0

Answer:

I will use formular for gradient

= <u>y²-y¹</u>

x²-x¹

<u>2</u><u>-</u><u>1</u><u>.</u><u>5</u>

4-1.5

<u>1</u><u>.</u><u>5</u>

3.5

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Answer:

The answer is option B

Step-by-step explanation:

To find cos 45° we must first find the adjacent and the hypotenuse

Let the adjacent be x

Let the hypotenuse be h

To find the adjacent we use tan

tan ∅ = opposite / adjacent

From the question

the opposite is 9

So we have

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x tan 45 = 9

but tan 45 = 1

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Since we have the adjacent we use Pythagoras theorem to find the hypotenuse

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h = √162

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Now use the formula for cosine

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The hypotenuse is 9√2

So we have

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We have the final answer as

<h3 /><h3>cos 45 = 1 / √2</h3>

Hope this helps you

3 0
3 years ago
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