Trigonometryhard · Past Paper
What is the value of cot^2 30 - 2 cos^2 60 - 3/4 sec^2 45 - 4 sin^2 30?
A0
B1
C2
D-1
✓ Correct Answer: A — 0
3 - 2(1/4) - 3/4(2) - 4(1/4) = 3 - 0.5 - 1.5 - 1 = 0.
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