Question

R2.
E
S
The line passing through (7,3), (5,1) meets th
axis at P. If the line is rotated through an an
30° in the anti clockwise direction about Pi
the slope of its new position is​

Answer 1

Answer:

Slop of line =

7−5

3−1

=

2

2

=1⇒θ=45

0

y−1=x−5⇒y=x−4

It meets x-axis at (4,0)

x=α+x

1

cosθ−y

1

sinθ

y=β+x

1

sinθ+y

1

cosθ

⇒x=4+x

1

(

2

3

)−y

1

(

2

1

)

y=0+x

1

(

2

1

)+y

1

(

2

3

)

y=x−4

⇒

2

x

1

+

2

y

1

3

=4+

2

3

x

−

2

y

1

−4

⇒m=

3

+1

3

−1

×

3

−1

3

−1

=

2

3+1−2

3

=2−

3