Angle between two lines
Two-dimensional geometry · Mathematics
Study notes
Q: Find the acute angle between y = 2x + 1 and y = −x + 4. m₁ = 2, m₂ = −1. tanθ = |(2−(−1))/(1+2(−1))| = |3/(−1)| = 3. θ = arctan 3 ≈ 71.6°.
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Two-dimensional geometry · Mathematics
Q: Find the acute angle between y = 2x + 1 and y = −x + 4. m₁ = 2, m₂ = −1. tanθ = |(2−(−1))/(1+2(−1))| = |3/(−1)| = 3. θ = arctan 3 ≈ 71.6°.