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3 years ago

Please help please please now I nee help

Mathematics

2 answers:

attashe74 [19]3 years ago

8 0

Answer:

AC =3.76

Step-by-step explanation:

sin theta = opposite / hypotenuse

sin 70 = ? / 4

Multiply each side by 4

4 sin 70 = ?

3.758770783 = ?

Rounding to nearest hundredth

3.76 = ?

AC =3.76

KATRIN_1 [288]3 years ago

8 0

Answer:

3.76 units

Step-by-step explanation:

We want to use trigonometry to solve this - specifically, the trigonometric function sine, which is opposite divided by hypotenuse.

Here, the opposite side is AC, which is what we want to find, while the hypotenuse is AB, which is 4. The angle itself is angle ABC, which is 70 degrees. Now, write:

sin(70) = opposite / hypotenuse = AC / 4

Multiply both sides by 4:

AC = 4 * sin(70) ≈ 3.76 units

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Answer:

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Step-by-step explanation:

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$21-8k-4k^{2} > 0$

solve the quadratic equation by graphing

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see the attached figure

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3 years ago

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Step-by-step explanation:

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