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3 years ago

What are the various fields of linear equations

Mathematics

1 answer:

mars1129 [50]3 years ago

7 0

Answer:

Linear equations are used to calculate measurements for both solids and liquids. An electrical engineer, for example, uses linear equations to solve problems involving voltage, current and resistance.

Step-by-step explanation:

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<img src="https://tex.z-dn.net/?f=Evaluate%3A%20%5Csqrt%7B%20%5Cfrac%20%7B1%20-%20sin%28x%29%7D%7B1%20%2B%20sin%28x%29%E2%80%8B%

stealth61 [152]

$\large\underline{\sf{Solution-}}$

We have to evaluate the given expression.

$\rm = \sqrt{ \dfrac{1 - \sin(x) }{1 + \sin(x) } }$

If we multiple both numerator and denominator by 1 - sin(x), then the value remains same. Let's do that.

$\rm = \sqrt{ \dfrac{[1 - \sin(x)][1 - \sin(x) ]}{[1 + \sin(x)][1 - \sin(x) ]} }$

$\rm = \sqrt{ \dfrac{[1 - \sin(x)]^{2}}{1- \sin^{2} (x) } }$

We know that:

$\rm \longmapsto { \sin}^{2}(x) + \cos^{2}(x) = 1$

$\rm \longmapsto \cos^{2}(x) = 1 - { \sin}^{2}(x)$

Therefore, the expression becomes:

$\rm = \sqrt{ \dfrac{[1 - \sin(x)]^{2}}{\cos^{2} (x)}}$

$\rm = \dfrac{1 - \sin(x)}{\cos(x)}$

$\rm = \dfrac{1}{\cos(x)} - \dfrac{ \sin(x) }{ \cos(x) }$

$\rm = \sec(x) - \tan(x)$

7 0

3 years ago

Read 2 more answers

What is the value of x will make the inequality true. 5x - 10 < 75?

Ipatiy [6.2K]

Answer:

x=16 or any value less than 16.

Step-by-step explanation:

16x5=80 and subtract 10 you get 70. X has to equal a value that makes the whole left side of the equation "smaller" than the irght side, and 16 or any value less than that would accomplsish this.

5 0

3 years ago

Read 2 more answers

If g(x) = 2(x − 4), find the value of x if g(x) = 20

Natalka [10]

Substitute for x.
g(20)= 2(20-4)
g(20)=32.
x=32.
~god bless you!

4 0

3 years ago

Read 2 more answers

Simplify:

wlad13 [49]

Answer: