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3 years ago

Which of the following is an identity? Also, please include an explanation.

1 answer:

6 0

$cot\theta= \frac{ cos \theta}{ sin \theta } \\ sec\theta = \frac{1}{ cos \theta } \\ \\ \\ sin \theta cot\theta sec\theta \\ = sin \theta \cdot \frac{ cos \theta}{ sin \theta } \cdot \frac{1}{ cos \theta } \\ = \frac{ sin \theta}{ sin \theta } =1 \\$

sinθcotθsecθ = 1

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I'm stuck on this question

mr_godi [17]

You appear to have made an odd, albeit common arithmetical mistake: you seem to have done width x 1/length instead of width x length. The correct way to do this is:

5/12 x 5/6 = (5x5)/(12x6) = 25/72

7 0

3 years ago

Read 2 more answers

5+1/2(14b-8)=-6 5+__b-4=-6 7b+__=-6 7b=__ b=__ ANSWERS 7-7-1 1

Lunna [17]

Answer:

7, 1, -7, -1.

Step-by-step explanation:

5+1/2(14b-8) = -6

5 + 7b - 4 = -6

7b + 1 = -6

7b = -7

b = -1

So, your answer will be 7, 1, -7, -1.

Hope this helps!

3 0

3 years ago

Evaluate ( 1 2 )x^ 0 ,

Ymorist [56]

Answer:

<em>i believe it would be 12</em>

Step-by-step explanation:

Anything to the zero power is 1. One times 12 gives you your grand answer of 12!

8 0

3 years ago

El valor de x en la ecuación 1+4x-3=6x+8

AlekseyPX

Answer:

1 + 4x - 3 = 6x + 8

4x - 6x = 8 - 1 + 3

-2x = 10|:(-2)

x = -5

8 0

2 years ago

Read 2 more answers

PLZ help me super really really fast

maria [59]

Answer:

A. 3 cm

Step-by-step explanation:

The smallest face has the sides 4 cm and 8 cm. If the water is 4 cm from its top, then the height of the water is $16-4=12$ cm and the volume of the water is

$V_{water}=4\cdot 8\cdot 12=384\ cm^3$

The largest face has the sides 8 cm and 16 cm. If the container is placed on its largest face, then the volume of the water is

$V_{water}=8\cdot 16\cdot h \ cm^3,$

where h is the height of the water.

Equate volumes of the water:

$8\cdot 16\cdot h=384\\ \\h=\dfrac{384}{8\cdot 16}=3\ cm$

Therefore, the water is 3 cm from the bottom.

4 0

2 years ago