Answer to Question #87291 in Math for Jflows

Question

3. if a=3i+4j+5k and b=2i+j+7k. Find a.b
a.45
b.40
c.30
d.35

4.What is the gradient of the straight line and the angle of inclination of the points, A(2, -3) and B(4, 5)?
a.gradient=1, angle = 30 degree
b.gradient=1, angle = 35 degree
c.gradient=1, angle = 45 degree
d.gradient=2, angle = 45 degree

Answer 1

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