Homework Help: Maths

Posted by Tammy on Tuesday, March 15, 2011 at 2:40am.

Two cyclists depart from the same point. One travels due East at 18km/hr while the other travels North-West at 20km/hr. How long will it be before they are 80km apart?

Maths - bobpursley, Tuesday, March 15, 2011 at 9:06am
80^2=t^2(20^2+18^2)

solve for time t.
Maths - Tammy, Tuesday, March 15, 2011 at 9:31am
Wonderful, thank you

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