2 years ago

The domain of an inverse of a relation is the domain of the original relation true or false

Mathematics

1 answer:

Gekata [30.6K]2 years ago

6 0

The answer would be B) False.

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Fill in Sin, Cos, and tan ratio for angle x. <br> Sin X = 4/5 (28/35 simplified)

Fantom [35]

Answer:

Given: $\sin(x) = (4/5)$ .

Assuming that $0 < x < 90^{\circ}$ , $\cos(x) = (3/5)$ while $\tan(x) = (4/3)$ .

Step-by-step explanation:

By the Pythagorean identity $\sin^{2}(x) + \cos^{2}(x) = 1$ .

Assuming that $0 < x < 90^{\circ}$ , $0 < \cos(x) < 1$ .

Rearrange the Pythagorean identity to find an expression for $\cos(x)$ .

$\cos^{2}(x) = 1 - \sin^{2}(x)$ .

Given that $0 < \cos(x) < 1$ :

$\begin{aligned} &\cos(x) \\ &= \sqrt{1 - \sin^{2}(x)} \\ &= \sqrt{1 - \left(\frac{4}{5}\right)^{2}} \\ &= \sqrt{1 - \frac{16}{25}} \\ &= \frac{3}{5}\end{aligned}$ .

Hence, $\tan(x)$ would be:

$\begin{aligned}& \tan(x) \\ &= \frac{\sin(x)}{\cos(x)} \\ &= \frac{(4/5)}{(3/5)} \\ &= \frac{4}{3}\end{aligned}$ .

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2 years ago

Plssssssssssss help asap !

7nadin3 [17]

Answer:

B one solution to the problem

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Norma-Jean [14]

Answer:

-0.25, -0.15, -0.6

Step-by-step explanation:

- 1/4= -0.25.

Bigger number with negative = smaller number

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2 years ago

21.50 x y = 225<br> what is y?<br> I need help, please

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Answer:

10.5

Step-by-step explanation:

225÷21.50

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In ΔMNO, the measure of ∠O=90°, the measure of ∠N=40°, and NO = 8.1 feet. Find the length of OM to the nearest tenth of a foot.

kolbaska11 [484]

Answer: 6.8 feet

Step-by-step explanation:

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2 years ago