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Find the angle of slope of the straight line joining the points P(-3, 2) and Q(5...

Question

Find the angle of slope of the straight line joining the points P(-3, 2) and Q(5, 5).

A) 31°

B) 41°

C) 21°

D) 20.5°

Dicussion (1)

• The formula for angle of a slope is m=tan μ(angle)
m= (y2-y1)/x2-x1
m= (5-2)/5-(-3)
3/8
Therefore, m=tan μ (angle)
3/8=tan μ
μ= arc tan 0.375
μ= 20.556
approximately 21⁰