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3 years ago

15

Can i get help on a 7 part assignment? I have already done 4 parts of it and its a redo. PLEASE HELP I NEED THIS DONE TODAY AND

GIVING 150 points across this post and the next one

1 answer:

tresset_1 [31]3 years ago

4 0

What do we have to do ?

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About how wide is this house?

AURORKA [14]

Answer:

The house is 37.37 feet wide.

Step-by-step explanation:

See the diagram attached to this question.

We know, the formula from properties of triangle that

$\cos A = \frac{b^{2} + c^{2} - a^{2}}{2bc}$

Here we assume that A = 65°, b = 26 feet and c = 40 feet and we have to find a = x feet.

So, using this above formula, we can write

$\cos 65 = \frac{26^{2} + 40^{2} - x^{2}}{2\times 26 \times 40}$

⇒ $26^{2} + 40^{2} - x^{2} = 2 \times 26 \times 40 \cos 65 = 879$

⇒ $x^{2} = 26^{2} + 40^{2} - 879 = 1396.95$

⇒ x = 37.37 feet.

Therefore, the house is 37.37 feet wide. (Answer)

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3 years ago