Mathematics
Grade9
Easy
Question
The angle between the two lines is ________.
- 75o
- 60o
- 30o
- 90o
Hint:
In this question, we have to find the measurement of the angle formed between the lines p and q where the coordinates of line p are (-2,0) and (1, 4) and the co-ordinates of q are (-1,9) and (7,3). Firstly we will calculate the slope of both the p and q. Further we will check the relation between the slopes of both the line, in that way we can get the angle formed.
The correct answer is: 90o
The coordinates of line p are (-2,0) and (1, 4) and the co-ordinates of q are (-1,9) and (7,3).
Slope of line p, 
Slope of line q, 
As 
, the lines are perpendicular.
So. the angle formed is 90 degree angle.
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