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In the right triangle in the figure, measures 5 units and measures 4 units. For , which of the following has a value of ?

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The ACT Mathematics Test contains 60 questions to be answered in 60 minutes.  The hardest ACT math questions (the last 10 to 15 questions) fall into two types: advanced concepts and complex questions. Advanced concepts questions cover what you learn in precalculus and trigonometry. FYI: Students that get into Harvard College have an ACT score of 34–36.

In the right triangle in the figure, <img alt='images' src='https://www.fatskills.com/images2/ACT/eq02626.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:mover accent='true'><m:mrow><m:mi>A</m:mi><m:mi>B</m:mi></m:mrow><m:mo stretchy='true'>¯</m:mo></m:mover></m:mrow></m:math>--> measures 5 units and <img alt='images' src='https://www.fatskills.com/images2/ACT/eq02627.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:mover accent='true'><m:mrow><m:mi>B</m:mi><m:mi>C</m:mi></m:mrow><m:mo stretchy='true'>¯</m:mo></m:mover></m:mrow></m:math>--> measures 4 units. For <img alt='images' src='https://www.fatskills.com/images2/ACT/eq02628.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:mo>∠</m:mo><m:mi>B</m:mi></m:mrow></m:math>-->, which of the following has a value of <img alt='images' src='https://www.fatskills.com/images2/ACT/eq02629.png'/><!--<m:math display='inline' overflow='scroll' xmlns:m='http://www.w3.org/1998/Math/MathML'><m:mrow><m:mfrac><m:mn>3</m:mn><m:mn>4</m:mn></m:mfrac></m:mrow></m:math>-->? <br><img alt='image' src='https://www.fatskills.com/images2/ACT/9781119275435-fg0263.png' />






 
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