Engineering Board Exam Reviewer · Tangent and Normal Lines · medium
Find the angle of inclination (in degrees) of the tangent line to y=x2 at x=1.
- 45°
- 63.43°
- 26.57°
- 116.57°
Answer
B. 63.43°
Solution
y'=2x=2 at x=1, so =2 and = -12 63.43°.
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