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Math Help - Pythagoras Theorem Questions

  1. #1
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    Pythagoras Theorem Questions

    A spectator watches a rowing race from the edge of a river bank, standing beside the finish line marker. The lead boat is moving in a straight line that is 36 m from the river bank. Give an expression for d, the distance of the boat from the spectator, in terms of r , the distance remaining in the race.

    d=_____________________

    Andrew started walking east at 3 km/h. 2 hours later Brian left the same place, but walked north at 5 km/h. Give an expression for d , the distance between Andrew and Brian, in terms of t , the time since Brian started walking.

    d=____________________
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  2. #2
    MHF Contributor Mathstud28's Avatar
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    Quote Originally Posted by lemontea View Post
    A spectator watches a rowing race from the edge of a river bank, standing beside the finish line marker. The lead boat is moving in a straight line that is 36 m from the river bank. Give an expression for d, the distance of the boat from the spectator, in terms of r , the distance remaining in the race.

    d=_____________________

    Andrew started walking east at 3 km/h. 2 hours later Brian left the same place, but walked north at 5 km/h. Give an expression for d , the distance between Andrew and Brian, in terms of t , the time since Brian started walking.

    d=____________________
    Why dont you show some work, apply the fact that in a right triangle, with c being the hypo and a and b being legs we have

    c=\sqrt{a^2+b^2}
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