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sdas [7]
2 years ago
7

Please help! I need the work for this.

Mathematics
1 answer:
Elden [556K]2 years ago
7 0

Answer:

Step-by-step explanation:

x = 6 hope this helps

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Please Help. I really don’t get this concept, if you could explain it in detail it would be very appreciated
Dafna11 [192]
<h3>Answer: 24/25</h3>

=================================================

Explanation:

Sine is given to be negative, and so is tangent. This only happens in quadrant Q4

Recall that y = sin(theta), so if sin(theta) < 0, then we're below the x axis.

If tan(theta) < 0, then this means cos(theta) > 0

So we have y < 0 and x > 0 which places the angle somewhere in Q4.

--------------------------

Draw a right triangle as shown below in the attached image. We have AC = 25 and BC = 7. Use the pythagorean theorem to find that AB = 24

So this is what your steps may look like

a^2+b^2 = c^2

7^2+b^2 = 25^2

b^2+49 = 625

b^2 = 625-49

b^2 = 576

b = sqrt(576)

b = 24

So because AB = 24, we know that the cosine of the angle is adjacent/hypotenuse = 24/25

---------------------------

As an alternative, you could use the trig identity

sin^2(x) + cos^2(x) = 1

and plug in the given value of sine to solve for cosine. The cosine value result will be positive since we're in Q4.

So,

sin^2(x) + cos^2(x) = 1

(-7/25)^2 + cos^2(x) = 1

(49/625) + cos^2(x) = 1

cos^2(x) = 1 - (49/625)

cos^2(x) = (625/625) - (49/625)

cos^2(x) = (625-49)/625

cos^2(x) = 576/625

cos(x) = sqrt(576/625)

cos(x) = sqrt(576)/sqrt(625)

cos(x) = 24/25

This is effectively a rephrasing of the previous section since the pythagorean trig identity is more or less the pythagorean theorem (just in a trig form)

6 0
3 years ago
60 min is 20%of blank min
enot [183]

Answer:

20% of the number is 60.

100% of the number is therefore (100/20) x 60 = 5 x 60 = 300

Step-by-step explanation:

Explanation:

No further explanation required really!


4 0
3 years ago
Need help please!<br> Asap!
docker41 [41]

Answer:

deese nots

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
How do you turn 5/2 into 10/4?
o-na [289]
That’s easy. To turn 5/2 into 10/4 you multiply by 2. :D Hope this helps!
3 0
2 years ago
Read 2 more answers
among 210 student 85 price in English 125 price in Nepali and 25 failed in both subject find the number of students who passed i
notka56 [123]

Answer:

210=85+125-x+25

x= 235-210

x=25 failled in both

Step-by-step explanation:

5 0
2 years ago
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