Question 554909
Consider a ladder leaning up against a wall. 
Find the length of a ladder if it makes an angle of 67 degrees with the ground and its feet are 0.9 meters from the wall. 
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Draw the picture.
The ladder the hypotenuse.
cos(67) = adjacent/hypotenuse = 0.9/hypotenuse
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hypotenuse = 0.9/cos(67) = 2.30 meters
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Cheers,
Stan H.
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