Digital SAT Math Practice Question #159
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
Check for special right triangles (\( 30^\circ-60^\circ-90^\circ \) or \( 45^\circ-45^\circ-90^\circ \)) or the complementary angle identity \( \sin(x) = \cos(90^\circ - x) \).
Elimination Shortcut: Check the extremes or test answer choices starting with C to binary search the correct magnitude.
Let's work through this geometry problem. It tests the most fundamental rule of triangles: the Triangle Angle Sum Theorem. If you know this one rule, the question becomes a simple algebra problem. Step 1: Recall the geometric rule. The sum ...
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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