1.

Find the slope of a line with inclination 45° and 135°.

Answer»

Given, inclination, θ = 45°

∴ Slope of the line, m = tan θ

= tan 45° = 1.

And inclination, θ = 135°

Slope, m = tan 135°

= tan (90° + 45°)

= – cot 45°

= – 1



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