Digital ACT Math Practice Question #1466
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
Q3: both negative. 60° reference: cos = 1/2, sin = sqrt(3)/2 -> (-1/2, -sqrt(3)/2).
4pi/3 is in Q3 (both x and y are negative). Reference angle = pi/3 (60°). cos(4pi/3) = -cos(pi/3) = -1/2. sin(4pi/3) = -sin(pi/3) = -sqrt(3)/2. Coordinates are (-1/2, -sqrt(3)/2)....
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