Question

the angle between X + Y + 1 = 0 and 2x+y=0​

Answer 1

ANSWER:—

Imp point :-

Slope of given line =>

- x coefficient / y coefficient

Ex :-

ax +by +c = 0

it's slope is

m = -a/b

A = x + y = -1 \\ \\ slope \: of \: A = -1 \\ \\ B = 2x + 2y = -1 \\ \\ slope \: of \: B = -1 \\ \\

Using \: \: formula.... \\ \\ \tan( \theta) = | \frac{m_2 - m_1}{1 + m_1m_2} | \\ \\ \tan( \theta) = | \frac{ - 1 + 1}{1 + ( - 1)( - 1)} | \\ \\ \tan( \theta) = {0}^{ \circ} \\ \\

thanks.

hope it helps

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