Right triangle trigonometry word problems help

Mathematics

1 answer:

eduard3 years ago

6 0

Tan-1 (442/18)
Answer = 87.7

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Find the surface area of this triangular prism

Yuki888 [10]

Answer:

300 in2

Step-by-step explanation:

area of 2 identical triangle + area of 3 rectangle = surface area

(5*12/2)*2 + 8*12 + 5*8 + 8*13 = 300 in2

4 0

4 years ago

Suppose the voltage in an electrical circuit varies with time according to the formula V(t) = 40 sin(t) for t in the interval [0

grigory [225]

The numerical value of the mean voltage is 25.47 V

To find the numerical value of the mean voltage, V of V(t) = 40 sin(t), we integrate V(t) with respect to t over the interval [0.π]

So,

$V = \frac{1}{\pi } \int\limits^\pi _0 {V(t)} \, dt \\V = \frac{1}{\pi } \int\limits^\pi _0 {40sint} \, dt \\V = \frac{1}{\pi } [-40cost]_{0}{\pi } \\V = \frac{1}{\pi } -[40cos\pi - 40cos0]\\\\V = \frac{1}{\pi } (-[40 X (-1) - 40 X 1})\\V = -\frac{1}{\pi } [-40 - 40]\\V = \frac{80}{\pi } \\V = 25.465 V$

V ≅ 25.47 V

So, the numerical value of the mean voltage is 25.47 V

Learn more about mean volatage here:

brainly.com/question/17928028

7 0

3 years ago

Solve the equations 1. 16x^2-1=0 2. 36z^2 96z 15=0

Allisa [31]

$16x^2-1=0 2$

$16x^2-1=0 2:x$

$
16x^2=1
 
$ $|Add \ 1 \ to \ both \ sides|$

$x^2= \dfrac{1}{16}$ $|Divide \ both \ sides \ by \ 16|$ <span>
</span>
$x^2= \sqrt{\dfrac{ \sqrt{1}}{ \sqrt{16}}}$ $|Take \ the \ square \ root \ of \ both \ sides|$

$x= \dfrac{1}{4}$

5 0

3 years ago

Please help and step by step

vivado [14]

Answer:

Step-by-step explanation:

720/144=5

7 0

3 years ago

Another question: r = ab/a+b Find a....

AnnyKZ [126]

I think the answer is br/b-r = a