Engineering Board Exam Reviewer · Angle Between Two Lines · easy

Find the acute angle between two lines whose slopes are 1 and 3, in degrees.

1. 26.57°
2. 63.43°
3. 45°
4. 18.43°

Answer

A. 26.57°

Solution

=≤ft|m2-m1/1+m1m2 |=3-1/1+3= 12 =26.57°.

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