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Angles made by the line with the positive direction of X-axis are given. Find the slope of these lines. i. 45° ii. 60° iii. 90° |
Answer» i. Angle made with the positive direction of X-axis (θ) = 45° Slope of the line (m) = tan θ ∴ m = tan 45° = 1 ∴ The slope of the line is 1. ii. Angle made with the positive direction of X-axis (θ) = 60° Slope of the line (m) = tan θ ∴ m = tan 60° = √3 ∴ The slope of the line is √3 iii. Angle made with the positive direction of X-axis (θ) = 90° Slope of the line (m) = tan θ ∴ m = tan 90° But, the value of tan 90° is not defined. ∴ The slope of the line cannot be determined. |
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