- #1
jen333
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Related Rates! help please!
A and B are walking on straight paths that meet at right angles. A approaches at 2m/sec; B moves away from the intersection at 1m/sec. At what rate is the angle [tex]\vartheta[/tex] changing when A is 10m from the intersection and B is 20m from the intersection. Ans in degrees per second.
attempted solving the question using tan ratio where:
tan[tex]\vartheta[/tex] (t)= A/B= (10-2t)/(20+t)
I know i have to take the derivative of this equation in order to get d[tex]\vartheta[/tex]
/dt, but how?
A and B are walking on straight paths that meet at right angles. A approaches at 2m/sec; B moves away from the intersection at 1m/sec. At what rate is the angle [tex]\vartheta[/tex] changing when A is 10m from the intersection and B is 20m from the intersection. Ans in degrees per second.
attempted solving the question using tan ratio where:
tan[tex]\vartheta[/tex] (t)= A/B= (10-2t)/(20+t)
I know i have to take the derivative of this equation in order to get d[tex]\vartheta[/tex]
/dt, but how?