Show that the equations to the straight lines passing through the point (3,−2) and inclined at 60@ to the line sqrt3x+y=1 are y+2=0 and y−sqrt3x+2+3sqrt3=0.

kennadiceKesezt

kennadiceKesezt

Answered question

2022-09-25

Show that the equations to the straight lines passing through the point ( 3 , 2 ) and inclined at 60 to the line 3 x + y = 1 are y + 2 = 0 and y 3 x + 2 + 3 3 = 0

Answer & Explanation

vidovitogv5

vidovitogv5

Beginner2022-09-26Added 10 answers

Let θ be the angle between two lines whose slopes are m 1 , m 2 . Then we have:
tan θ = | m 1 m 2 1 + m 1 m 2 |
tan θ = | m 1 m 2 1 + m 1 m 2 |
As we know m 1 , we can just plug in the value and get m 2 :
3 = | 3 m 2 1 3 m 2 |
3 3 m 2 = 3 m 2 m 2 = 3
or
3 + 3 m 2 = 3 m 2 m 2 = 0
y + 2 = 0 ( x 3 ) y + 2 = 0
y + 2 = 3 ( x 3 ) y 3 x + 2 + 3 3 = 0

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