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garik1379 [7]
3 years ago
10

hi!! <3 i attached a picture of a easy trigonometry question can you please help if you don’t mind <33

Mathematics
1 answer:
Inessa05 [86]3 years ago
7 0

Answer:

Side AB has a length of 4, and side BC has a length of 11.7

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Tell whether (5,6) is a solution of <br> y &lt;5x+8
OleMash [197]

Answer:

yes

Step-by-step explanation:

y <5x+8

Substitute the point in and see if the inequality is true

6 < 5(5) +8

6 < 25 +8

6 < 33

This is true so the point is a solution

4 0
3 years ago
12'<br>Given that tan x =<br>sin x + cos x?<br>î, what is the value of<br>(WAEC]​
Andre45 [30]

Answer:

\tan(x) =  \sin(x)  +  \cos(x)

Sorry but your question is not too explanatory but I sure hope this helps

3 0
3 years ago
Find the surface area of the solid generated by revolving the region bounded by the graphs of y = x2, y = 0, x = 0, and x = 2 ab
Nikitich [7]

Answer:

See explanation

Step-by-step explanation:

The surface area of the solid generated by revolving the region bounded by the graphs can be calculated using formula

SA=2\pi \int\limits^a_b f(x)\sqrt{1+f'^2(x)} \, dx

If f(x)=x^2, then

f'(x)=2x

and

b=0\\ \\a=2

Therefore,

SA=2\pi \int\limits^2_0 x^2\sqrt{1+(2x)^2} \, dx=2\pi \int\limits^2_0 x^2\sqrt{1+4x^2} \, dx

Apply substitution

x=\dfrac{1}{2}\tan u\\ \\dx=\dfrac{1}{2}\cdot \dfrac{1}{\cos ^2 u}du

Then

SA=2\pi \int\limits^2_0 x^2\sqrt{1+4x^2} \, dx=2\pi \int\limits^{\arctan(4)}_0 \dfrac{1}{4}\tan^2u\sqrt{1+\tan^2u} \, \dfrac{1}{2}\dfrac{1}{\cos^2u}du=\\ \\=\dfrac{\pi}{4}\int\limits^{\arctan(4)}_0 \tan^2u\sec^3udu=\dfrac{\pi}{4}\int\limits^{\arctan(4)}_0(\sec^3u+\sec^5u)du

Now

\int\limits^{\arctan(4)}_0 \sec^3udu=2\sqrt{17}+\dfrac{1}{2}\ln (4+\sqrt{17})\\ \\ \int\limits^{\arctan(4)}_0 \sec^5udu=\dfrac{1}{8}(-(2\sqrt{17}+\dfrac{1}{2}\ln(4+\sqrt{17})))+17\sqrt{17}+\dfrac{3}{4}(2\sqrt{17}+\dfrac{1}{2}\ln (4+\sqrt{17}))

Hence,

SA=\pi \dfrac{-\ln(4+\sqrt{17})+132\sqrt{17}}{32}

3 0
3 years ago
YES!!!!!!!!!!! SCHOOL IS OVER<br><br>Answer with: WHOOOOOOOOOOOOOOOHOOOOOOO​
lesya692 [45]
Whoooooooooooooooohooooooooo
4 0
2 years ago
Read 2 more answers
3 1/2 divided by 2 1/4
liberstina [14]
3 1/2 divided by 2 1/4 = 1.55555556

1.55555556 Rounded is 1.55
8 0
3 years ago
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