Math, asked by reemakour3985, 3 months ago

find the angle made by the line joining (4,3) and (-2,-3) with the positive direction of x -axis.

Answers

Answered by psupriya789
0

Answer:

Step-by-step explanation:

Let dc's of line joining two points P(x  

1

​  

,y  

1

​  

,z  

1

​  

) and Q(x  

2

​  

,y  

2

​  

,z  

2

​  

) are

PQ

x  

2

​  

−x  

1

​  

 

​  

,  

PQ

y  

2

​  

−y  

1

​  

 

​  

,  

PQ

z  

2

​  

−z  

1

​  

 

​  

 

where PQ=  

(x  

2

​  

−x  

1

​  

)  

2

+(y  

2

​  

−y  

1

​  

)  

2

+(z  

2

​  

−z  

1

​  

)  

2

 

​  

 

According to equation

x  

1

​  

=4,y  

1

​  

=2,z  

1

​  

=3

x  

2

​  

=4,y  

2

​  

=5,z  

2

​  

=7

∴PQ=  

(4−4)  

2

+(5−2)  

2

+(7−3)  

2

 

​  

 

=  

0+9+16

​  

 

=  

25

​  

 

=5

∴ dC's of line joining (4,2,3) and (4,5,7) are  

5

4−4

​  

,  

5

5−2

​  

,  

5

7−3

​  

 or 0,  

5

3

​  

,  

5

4

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