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3 years ago

URGENT!! LAW OF SINES WORK

Mathematics

1 answer:

Lynna [10]3 years ago

6 0

Answer:

1. 7.1 cm

2. 10.9 cm

Step-by-step explanation:

1. You know the legs of a right triangle must be shorter than the hypotenuse. The only answer choice shorter than 8 cm is 7.1 cm.

2. By the Law of Sines, ...

AB/AC = sin(ACB)/sin(B)

AB = AC·sin(72°)/sin(38°) = 1.545·AC

The approximate value of AC from problem 1 is sufficient to get you close to the answer.

AB ≈ 7.1×1.545 ≈ 10.9 . . . cm

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Answer:

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Step-by-step explanation:

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iVinArrow [24]

$Tan2x =\frac{-24}{7}$

Step-by-step explanation:

Here we have , cos x = -4/5 ( corrected as given -45 which is not possible ) ,

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⇒ $Tan\alpha = \frac{-3}{4}$ , since in third quadrant . $Tan\alpha = \frac{-3}{4}$ remains same .

Now , $Tan2x = \frac{2tanx}{1-(tanx)^{2}}}$

⇒ $Tan2x = \frac{2tanx}{1-(tanx)^{2}}}$

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Therefore, $Tan2x =\frac{-24}{7}$ .

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mixas84 [53]

Answer: SAS

Step-by-step explanation:

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3 years ago

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Anarel [89]

Answer:

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Step-by-step explanation:

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