1.

Find the equation of the line passing through (2, 2√3) and inclined with x – axis at an angle of 75°

Answer»

Given:

A line which is passing through (2, 2√3), the angle is 75°.

By using the formula,

The equation of line is [y – y1 = m(x – x1)]

Here, angle, θ = 75°

The slope of the line, m = tan θ

m = tan 75°

= 3.73 = 2 + √3

The line passing through (x1, y1) = (2, 2√3)

The required equation of the line is y – y1 = m(x – x1)

Now, substitute the values, we get

y – 2√3 = 2 + √3 (x – 2)

y – 2√3 = (2 + √3)x – 7.46

(2 + √3)x – y – 4 = 0

∴ The equation of the line is (2 + √3)x – y – 4 = 0



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