If slope of a line is negative then its inclination is ___________(a) right angle(b) acute angle(c) obtuse angle(d) zeroThis question was addressed to me in an interview for internship.The query is from Various Forms of the Equation of a Line in chapter Straight Lines of Mathematics – Class 11

If slope of a line is negative then its inclination is ___________(a)

1.	If slope of a line is negative then its inclination is ___________(a) right angle(b) acute angle(c) obtuse angle(d) zeroThis question was addressed to me in an interview for internship.The query is from Various Forms of the Equation of a Line in chapter Straight Lines of Mathematics – Class 11
Answer» Correct choice is (C) obtuse angle To ELABORATE: If inclination is α SLOPE is given by TAN α. Given that slope of line is negative which MEANS tan α is negative. We know, tan α is negative in 2^nd quadrant i.e. α should be obtuse angle.

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