Trigonometrymedium · Past Paper
Calculate: sin 45 * cos 45 - sin 30 * cos 30
A(2 - sqrt(3))/4
B(1 - sqrt(3))/4
C0
D1/4
✓ Correct Answer: A — (2 - sqrt(3))/4
(1/sqrt(2) * 1/sqrt(2)) - (1/2 * sqrt(3)/2) = 1/2 - sqrt(3)/4 = (2 - sqrt(3))/4.
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