If slope of a line is negative then its inclination is: - Vidyadip

MCQ

If slope of a line is negative then its inclination is:

A
Right angle.
B
Acute angle.
C
Obtuse angle.
D
Zero.

✓

Answer

Obtuse angle.

Solution:

If inclination is $\alpha$ slope is given by $\tan\alpha$ Given that slope of line is negative which means $\tan\alpha$ is negative. We know, $\tan\alpha$ is negative in 2^nd quadrant i.e. $\alpha$ should be obtuse angle.

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