<img src="https://tex.z-dn.net/?f=42%20%5Ctimes%2042%20%5Ctimes%2029%20%3D%20" id="TexFormula1" title="42 \times 42 \times 29 =

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Lana71 [14]

3 years ago

" alt="42 \times 42 \times 29 = " align="absmiddle" class="latex-formula">

Mathematics

1 answer:

Blababa [14]3 years ago

6 0

The correct answer is 51156

Hope this helps :)

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Find the exact value of cos theta, given that sin thetaequalsStartFraction 15 Over 17 EndFraction and theta is in quadrant II.

vova2212 [387]

Answer:

$cos \theta = -\frac{8}{17}$

Step-by-step explanation:

For this case we know that:

$sin \theta = \frac{15}{17}$

And we want to find the value for $cos \theta$ , so then we can use the following basic identity:

$cos^2 \theta + sin^2 \theta =1$

And if we solve for $cos \theta$ we got:

$cos^2 \theta = 1- sin^2 \theta$

$cos \theta =\pm \sqrt{1-sin^2 \theta}$

And if we replace the value given we got:

$cos \theta =\pm \sqrt{1- (\frac{15}{17})^2}=\sqrt{\frac{64}{289}}=\frac{\sqrt{64}}{\sqrt{289}}=\frac{8}{17}$

For our case we know that the angle is on the II quadrant, and on this quadrant we know that the sine is positive but the cosine is negative so then the correct answer for this case would be:

$cos \theta = -\frac{8}{17}$

5 0

2 years ago

If 3/5 of a chorus is singing. What fraction of the chorus is not singing?

Montano1993 [528]

5/5 (one whole) - 3/5 = 2/5.

8 0

2 years ago

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What is the value of x? 40° (6x + 2)

Anvisha [2.4K]

Answer:

x = 8

Step-by-step explanation:

40 + 6x + 2 = 90 {Complementary angles}

Combine like terms

40+ 2 + 6x = 90

42 +6x = 90 {Subtract 42 form both sides}

6x = 90 - 42

6x = 48 {divide both sides by 6}

6x/6 = 48/6

x = 8

6 0

3 years ago

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1/5 (5x-15) -2x What is the question ?? How do I solve the problem ??

Ksenya-84 [330]

Answer:

$-x-3$

Step-by-step explanation:

They want you to simplify the expression.

Step 1: Apply the distributive property.

$\frac{1}{5} (5x)+\frac{1}{5} (-15-2x)$

Step 2: Cancel the common factor of 5.

$x+\frac{1}{5} (-15-2x)$

Step 3: Cancel the common factor of 5.

$x-3-2x$

Step 4: Subtract 2x from x.

$-x-3$

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2 years ago

In triangle ABC, m 15 1353 25

ikadub [295]

The answer would be 15

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2 years ago