Digital SAT Math Practice Question #2557
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Geometry & Trig Rule: Always sketch the triangle or circle and check for standard Pythagorean triples (3-4-5, 5-12-13, 7-24-25, 8-15-17).
7-24-25 is a Pythagorean triple: hypotenuse $= \sqrt{7^2 + 24^2} = 25$. Therefore $\cos \theta = \frac{\text{adjacent}}{\text{hypotenuse}} = \frac{24}{25}$....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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