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Question -

Find the slopes of the lines which make the following angles with the positive direction of x – axis:
(i) – π/4
(ii) 2π/3



Answer -

(i) – π/4
Let the slope of the line be ‘m’
Where, m = tan θ
So, the slope of Line is m = tan (– π/4)
= – 1
∴ The slope of the line is – 1.
(ii) 2π/3
Let the slope of the line be ‘m’
Where, m = tan θ
So, the slope of Line is m = tan (2π/3)
 
∴ The slope of the line is –√3

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