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mihalych1998 [28]
3 years ago
11

Use the intercept form to find the equation of the line with the given intercepts. The intercept form of the equation of a line

with intercepts (a, 0) and (0, b) is ​​ Point on line: (4, 6) x-intercept: (c, 0) y-intercept: (0, c), c ≠ 0
Mathematics
1 answer:
nadya68 [22]3 years ago
6 0

Answer:

Equation of line in x+y=10

Step-by-step explanation:

The intercept form of line is given as,

\dfrac{x}{a}+\dfrac{y}{b}=1

Where, line has x intercept as a and y intercept as b.

Given that x intercept as \left(c,0\right), so a = c. Also y intercepts as \left(0,c\right), so b = c.

Substituting the value in intercept form of line,

\dfrac{x}{c}+\dfrac{y}{c}=1

Since denominator are same,

\dfrac{x+y}{c}=1

Multiplying by c on both sides,

x+y=c

Given that point \left(4,6\right) lies on the line. So x = 4 and y = 6.

Substituting the value,

4+6=c

10=c

Substituting the value in x+y=c

x+y=10

Therefore, equation of line in the standard form of equation of line is x+y=10.

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If you're using the app, try seeing this answer through your browser:  brainly.com/question/3166243

——————————

Solve the trigonometric equation:

     \mathsf{2\,cos^2\,x-cos\,x=1}\\\\ \mathsf{2\,cos^2\,x-cos\,x-1=0}


Make a substitution:

     \mathsf{cos\,x=t\qquad (-1\le t\le 1)}

and the equation becomes

     \mathsf{2t^2-t-1=0}


Rewrite conveniently  – t  as  + t – 2t,  and then factor the left-hand side by grouping:

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Factor out  2t + 1:

     \mathsf{(2t+1)\cdot (t-1)=0}\\\\ \begin{array}{rcl} \mathsf{2t+1=0}&~\textsf{ or }~&\mathsf{t-1=0}\\\\ \mathsf{2t=1}&~\textsf{ or }~&\mathsf{t=1}\\\\ \mathsf{t=\dfrac{\,1\,}{2}}&~\textsf{ or }~&\mathsf{t=1} \end{array}


Substitute back for  t = cos x:

     \begin{array}{rcl}\mathsf{cos\,x=\dfrac{\,1\,}{2}}&~\textsf{ or }~&\mathsf{cos\,x=1}\\\\ \mathsf{cos\,x=cos\,60^\circ}&~\textsf{ or }~&\mathsf{cos\,x=cos\,0} \end{array}


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     \begin{array}{rcl} \mathsf{x=\pm\,60^\circ+k\cdot 360^\circ}&~\textsf{ or }~&\mathsf{cos\,x=0+k\cdot 360^\circ} \end{array}

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Solution set:   

\mathsf{S=\left\{x\in\mathbb{R}:~~x=-\,60^\circ+k\cdot 360^\circ~~or~~x=60^\circ+k\cdot 360^\circ~~or~~x=k\cdot 360^\circ,~~k\in\mathbb{Z}\right\}}


I hope this helps. =)

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Answer:

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Step-by-step explanation:

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Answer:

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