Question 691159
A ladder 3 metres long leans against a wall . It reaches 3 metres up the wall. What angle does the ladder make with the ground? 
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Draw the picture.
You have a right triangle with
hypotenuse = 3 metres
height = 3 meters
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Let the angle opposite the height be "x".
Equation:
sin(x) = 3/3 = 1
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x is a 90 degree angle.
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Note: Your hypotenuse cannot be as long as your height.
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Cheers,
Stan H.